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Games Like Operation Octo

60+ similar titles based on shared tags and player behavior. Themes include Singleplayer, Strategy, Casual, Tower Defense.

Operation Octo header art

Play as an Octopus scientist fighting off sunken skeletons in this frantic aquatic Tower Defense! Discover sea life turrets from unique biomes: Pistol Shrimp! Navy Seal! Death Ray! Deploy turrets whilst dodging enemy bullets as you venture the seven seas!

Reviews: Very Positive — 99% — of 111 reviews
Released: 2025-09-10
Developer: Klub Kofta Studio
Genres: Action, Adventure, Casual, Indie, Strategy
Platforms: Windows, Mac, Linux

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  1. #1 Tangy TD
    97% matchVery Positive91% of 1,438 reviews2026
    Dev: Cakez
    Windows
    Median: 1.4 hrsMean: 3.6 hrs≥1hr: 57%

    Strategic tower defense where you play a witch, place class-based towers, equip them with items that grant powerful abilities, combine them, create unique builds & deal ridiculous amounts of damage! Customize your builds with a deep stat system and giant skill tree!

    Why similar: Tower Defense 41.3%, Cartoony 10.6%, Strategy 10.2%, Survival 9.7%, Tactical 9.2%

  2. #2 Octogeddon
    96% matchVery Positive92% of 1,333 reviews2018
    Dev: All Yes Good
    Windows
    Median: 4.0 hrsMean: 7.7 hrs≥1hr: 87%

    You ARE Octogeddon, a massive mutant octopus with one mission: DESTROY the world! Grow more tentacles and evolve each of them into deadlier and deadlier weapons until you become the ultimate eight-legged killing machine!

    Why similar: Underwater 33.3%, Tower Defense 25.7%, Strategy 11.3%, Cartoony 10.1%, Casual 5.4%

  3. #3 Relic Guardian - Tower Defense
    96% matchOverwhelmingly Positive95% of 1,062 reviews2025
    Dev: Mystrigger
    Windows
    Median: 2.6 hrsMean: 5.0 hrs≥1hr: 74%

    "Relic Guardian" is a fantasy style strategy tower defense game. As the builder on the battlefield, summon a variety of defense towers and spells with reliable hero companions to complete this epic and guarding adventure!

    Why similar: Tower Defense 34.5%, Cartoony 12.9%, Cartoon 11.3%, Strategy 9.8%, Tactical 9.1%

  4. #4 Beach Defense: Zombie Invasion
    94% matchVery Positive83% of 157 reviews2026
    Dev: Only Fun Games
    Windows

    Command soldiers, survive zombie waves! A light strategy game mixing turn-based & real-time strategy, bullet hell, and backpack-like mechanics. Fit troops into limited backpack slots, build max firepower, challenge difficulty levels, and defend the last beach. Perfect for tower defense & fans.

    Why similar: Tower Defense 34.2%, Bullet Hell 15.3%, Cartoon 12.2%, Cartoony 9.9%, Strategy 9.7%

  5. #5 Defend Your Life: TD
    95% matchMostly Positive80% of 1,092 reviews2015
    Dev: Alda Games
    Windows · Mac · Linux
    Median: 4.3 hrsMean: 6.4 hrs≥1hr: 96%

    Defend Your Life! Is tower defense set in human body where players are fighting against villain hordes of viruses and bacteria. Levels and units correspond to reality of human anatomy.

    Why similar: Tower Defense 32%, Survival 12.8%, Cartoony 11.6%, Cartoon 10.1%, Strategy 8.3%

  6. #6 Age of Defense
    94% matchMostly Positive78% of 721 reviews2024
    Dev: Battlecruiser GamesPub: Valkyrie Initiative
    Windows
    Median: 4.1 hrsMean: 5.6 hrs≥1hr: 82%

    Age of Defense is a tower defense game full of mind-blowing mayhem. There are tons of monsters and tough defenders in the game each of which fits perfectly into a funny cartoonish setting.

    Why similar: Tower Defense 34.8%, Cartoon 13.7%, Cartoony 11.5%, Strategy 9.2%, Tactical 6.6%

  7. #7 Cluckmech Oasis
    93% matchVery Positive88% of 3,555 reviews2024
    Dev: BlackLightPub: Mammorize
    Windows · Mac
    Median: 6.7 hrsMean: 15.2 hrs≥1hr: 84%

    Cluckmech Oasis, a top-down shooting Roguelike tower defense game. Play as the Warcluck and lead your team of animal heroes in a fight for survival. Collect, build and upgrade defenses, and engage in intense battle against waves of plant enemies.

    Why similar: Tower Defense 51.5%, Strategy 14.5%, Cute 13.2%, Survival 12.4%, Action 4.1%

  8. #8 Crab God
    92% matchVery Positive83% of 306 reviews2024
    Dev: Chaos Theory GamesPub: Firesquid
    Windows

    Crab God is an atmospheric underwater strategy game. Guide your Crabling colony through wild ocean depths, and defend the egg of the next Crab God.Restore and protect diverse coral reefs, making a difference in the real world as you progress in-game. Make waves, praise the claw!

    Why similar: Underwater 37.2%, Tower Defense 24.3%, Survival 12.4%, Base Building 10.2%, Strategy 6.9%

  9. #9 Evolit
    91% matchVery Positive91% of 74 reviews2026
    Dev: Steel Heart GamesPub: Teneke Kafalar Spotlight
    Windows

    Take charge of the galaxy's defense! With strategic moves, stop waves of cute yet dangerous enemies and prevent them from reaching the end of the road. Enhance your tactics with a variety of cards and unique towers, and stand against Evo! Strategy and infinity await here.

    Why similar: Tower Defense 41.6%, Survival 13.1%, Strategy 10.4%, Cute 7.9%, Comedy 7%

  10. #10 Bloons Adventure Time TD
    90% matchVery Positive87% of 4,731 reviews2019
    Dev: Ninja Kiwi
    Windows · Mac
    Median: 1.8 hrsMean: 17.6 hrs≥1hr: 61%

    Defend Ooo from the Bloon invasion in this epic tower defense crossover.

    Why similar: Tower Defense 52.6%, Strategy 21.5%, Cartoon 16%, Action 6.9%, Singleplayer 2.2%

  11. #11 Defense Of Greece TD
    91% matchMixed68% of 93 reviews2016
    Dev: First Games InteractivePub: First Games Interactive
    Windows · Mac
    Median: 3.0 hrsMean: 69.6 hrs≥1hr: 90%

    Ancient Greece under siege. Steam engines roar, bronze towers rise, and waves of soldiers and machines march against you.

    Why similar: Tower Defense 35.1%, Cartoon 13%, Cartoony 10.9%, Tactical 10.3%, Strategy 9.2%

  12. #12 Defensurvivor
    89% matchMostly Positive73% of 106 reviews2024
    Dev: SignatureGamez
    Windows

    DEFENSURVIVOR is a strategy game where you build obstacles and place and move units to block zombies. There are various units with unique characteristics and powerful high-level units that can be obtained through combination. Use randomly given units to survive until the end!

    Why similar: Tower Defense 33.8%, Bullet Hell 17%, Base Building 14.8%, Strategy 7.8%, Cute 7.7%

  13. #13 Yap Wizards Tower Defence
    88% matchVery Positive96% of 148 reviews2025
    Dev: Noffty Productions
    Windows · Mac · Linux

    Dynamic tower defence with an ever-scaling battlefield and unexpected twists!

    Why similar: Tower Defense 42.7%, Strategy 17.5%, Cartoony 14.6%, Base Building 10.3%, Casual 8.6%

  14. #14 Revenge of the Killer Octopus
    89% matchMostly Positive78% of 82 reviews2022
    Dev: Messy Bed Productions
    Windows

    Revenge of the Killer Octopus is a third-octopus game where you shoot and possess your way through throes of enraged scientists in order to take your revenge!

    Why similar: Underwater 68.1%, Cartoony 14.3%, Casual 5.5%, Action 4.5%, Comedy 4%

  15. #15 Broken Universe - Tower Defense
    87% matchVery Positive91% of 312 reviews2023
    Dev: Jinthree Studio
    Windows

    Get ready to rethink all your defense strategies! Build barricades to stop monsters, or lure them into a maze and attack. A variety of stages that change each time depending on how you play them.

    Why similar: Tower Defense 33%, Survival 14.4%, Base Building 12.3%, Cartoony 9.7%, Strategy 9.1%

  16. #16 Undead Tide: Light's Defense
    86% matchVery Positive84% of 73 reviews2026
    Dev: Crazy Studio
    Windows

    Relaxed strategic bullet hell survival, defending against endless undead legions! A roguelite bullet hell shooter that blends hero development, talent builds, and weapon combinations, supporting multiple playstyles and strategies!

    Why similar: Bullet Hell 25.1%, Cartoon 15.9%, Survival 15.7%, Strategy 11%, Cartoony 10.7%

  17. #17 Cliff & Field Tower Defense
    86% matchMixed65% of 56 reviews2023
    Dev: Kami Ventures AB
    Windows · Mac

    Use clever strategies and tricks to defend your new kingdom in this fast-paced, atmospheric and bullet-packed tower defense adventure.

    Why similar: Tower Defense 54.6%, Cute 12.3%, Strategy 12.3%, Casual 4.9%, 2D 4%

  18. #18 Bang Bang Barrage
    82% matchOverwhelmingly Positive96% of 989 reviews2025
    Dev: Monkey BreadPub: Spiral Up Games
    Windows · Mac
    Median: 3.2 hrsMean: 5.7 hrs≥1hr: 85%

    Survive the treacherous sea in this quirky multiplayer shooter game! Play solo or team up and fight off Cthulhu's minions. Master a unique recoil-based mechanic to blast enemies and chart your course. Mix and match upgrades to craft the perfect sea-surviving strategy!

    Why similar: Bullet Hell 36.1%, Cute 22.5%, Cartoony 13.4%, Casual 11.1%, Colorful 7.1%

  19. #19 Mechs V Kaijus - Tower Defense
    84% matchVery Positive84% of 540 reviews2022
    Dev: Doble Punch Games
    Windows
    Median: 6.8 hrsMean: 13.2 hrs≥1hr: 82%

    Mechs V Kaijus is an addictive hardcore tower defense gameplay. In Mechs V Kaijus you take on the role of Commander of a powerful Mechs squadron. Improve your Mech, strategically place towers and factories on the battlefield. Deploy support units on the battlefield, and save our civilization.

    Why similar: Tower Defense 39.4%, Bullet Hell 12.9%, Base Building 12%, Strategy 10%, Tactical 9.8%

  20. #20 Iron Sea Defenders
    85% matchVery Positive80% of 342 reviews2016
    Dev: CreobitPub: 8Floor
    Windows
    Median: 3.5 hrsMean: 5.0 hrs≥1hr: 98%

    Man the guns! The enemy fleet is on the horizon! Defend your fort from attacks – show your tactical skill.

    Why similar: Tower Defense 56.6%, Strategy 14.9%, Casual 7.4%, Action 5.7%, Comedy 5.2%

  21. #21 Toast Defense
    84% matchVery Positive85% of 223 reviews2020
    Dev: Egghead Interactive LLC.
    Windows

    Ducks are after your toast! Setup various water guns in this fun tower defense game to shoo away the ducks so they don't steal your precious toast. You choose how many flocks of ducks come for your toast each wave, the greater the risk the greater the reward!

    Why similar: Tower Defense 45.8%, Survival 20.5%, Strategy 16.4%, Cute 8.2%, 2D 3.3%

  22. #22 Candy Disaster - Tower Defense
    83% matchMostly Positive79% of 338 reviews2021
    Dev: ACE Entertainment
    Windows · Mac
    Median: 7.6 hrsMean: 7.9 hrs≥1hr: 96%

    Candy Disaster is 3D trap-style tower defense game where you guard candies against alien thieves! Unlock powerful and clever traps, choose your arsenal for different bases, and find the deadliest trap combination - then watch those space goons walk into their death!

    Why similar: Tower Defense 31.3%, Survival 23.4%, Cartoony 12.4%, Cute 8.8%, Strategy 8.4%

  23. #23 Skewer Squad
    81% matchVery Positive91% of 478 reviews2026
    Dev: Fake OwlsPub: HARRISONWORLD CO.,LTD
    Windows

    Skewer Squad is a cute yet chaotic tower defense roguelite. Step into the apron of a Grillmaster, draft random ingredients, mix wild seasonings, and build a squad of skewers that are both delicious and powerful to defend your grill.

    Why similar: Tower Defense 42.4%, Bullet Hell 21.6%, Cute 10.6%, Strategy 10.5%, Casual 3.9%

  24. #24 TDS - Tower Defense Strategy
    81% matchVery Positive81% of 366 reviews2025
    Dev: Blockage
    Windows · Mac · Linux

    TOWER ▪ DEFENSE ▪ STRATEGY. Control Vessels. Utilize their uniquely deep set of towers. Create an everchanging defense. Play with friends. Protect your Basin at all costs. An absolute Tower Defense, Real-Time Strategy Hybrid

    Why similar: Tower Defense 68%, Base Building 17.8%, Strategy 8.3%, Indie 3.1%, Singleplayer 2.9%

  25. #25 Zombo Buster Advance
    82% matchVery Positive83% of 244 reviews2020
    Dev: FIREBEAST
    Windows · Mac
    Median: 3.2 hrsMean: 9.2 hrs≥1hr: 66%

    Zombo Buster Advance is a tower defense game taking place inside buildings with interchangeable elevators. Deploy, swap and shoot like a boss!

    Why similar: Tower Defense 42%, Survival 13.7%, Strategy 12.3%, Cartoony 9.9%, Tactical 6.8%

  26. #26 Bees vs Zombees
    79% matchVery Positive89% of 105 reviews2024
    Dev: DeadPixelPub: DeadPIxel
    Windows

    A fast-paced roguelike tower defense where you choose your Queen Bee with unique skills and the Artisan to build turrets and cast powerful spells to defend your hive through regions infested with zombees. Face bosses with insane mechanics and survive the Zumbeecalypse!

    Why similar: Tower Defense 44.6%, Bullet Hell 19.5%, Strategy 12%, Cute 10%, Casual 4.2%

  27. #27 Tempest Tower
    79% matchVery Positive93% of 70 reviews2025
    Dev: Half Past Yellow
    Windows

    Tempest Tower is an action packed tower defense platformer where you must brawl with incoming hordes of Creepers while herding the local critters to safety. Build, fight, upgrade, overcome.

    Why similar: Tower Defense 40.8%, Base Building 17.9%, Cartoony 12.1%, Strategy 10.2%, Cute 9.5%

  28. #28 Ultimate Protector
    80% matchVery Positive89% of 63 reviews2022
    Dev: Dongguan Liuli Game Technology Co.,Ltd
    Windows

    Tired of moving around without purposes? Come and protect the goddess with multiple combination of skills and elements. Discover and upgrade your weapon to super, even hyper! Play this game with a joy from both tower defense and rogue!

    Why similar: Tower Defense 40.9%, Bullet Hell 15.4%, Survival 11.1%, Casual 8.9%, Tactical 7.6%

  29. #29 Towerful Defense: Prologue
    78% matchVery Positive88% of 75 reviews2024
    Dev: Mini Fun Games
    Windows · Mac · Linux

    A tower defense action roguelike where you control a single tower to fight against hordes of aliens coming from all directions. Pick your tower, equip up to 4 skills, and choose from a variety of traits and items to craft powerful builds that lead you to victory.

    Why similar: Tower Defense 40.7%, Bullet Hell 19.4%, Survival 15.1%, Strategy 11.1%, Casual 4.6%

  30. #30 Zombie Rollerz: The Last Ship
    76% matchVery Positive83% of 199 reviews2025
    Dev: Zing Games Inc.Pub: Wandering Wizard
    Windows

    Build turrets, lead your crew, and upgrade the ship while gathering loot in this exciting "Tower Defense-on-wheels zombie survival roguelite" game.

    Why similar: Tower Defense 44.7%, Bullet Hell 22.1%, Cute 11.3%, Strategy 11.3%, Colorful 4.4%

  31. #31 2112TD: Tower Defense Survival
    77% matchVery Positive87% of 439 reviews2023
    Dev: Refinery Games
    Windows

    Get ready for the ULTIMATE tower defense onslaught. Build, deploy, research and upgrade your defenses in this epic, old school RTS inspired sci-fi adventure.

    Why similar: Tower Defense 38.8%, Survival 17.8%, Isometric 14.2%, Tactical 10.6%, Strategy 10.2%

  32. #32 OTTTD
    78% matchMostly Positive75% of 359 reviews2014
    Dev: SMG Studio
    Windows · Mac · Linux
    Median: 2.9 hrsMean: 4.8 hrs≥1hr: 93%

    Take command of HEROCORP™ and launch a Preemptive Defence Campaign™ against parallel dimensions in OTTTD, the most outrageous Tower Defence title around.

    Why similar: Tower Defense 51.3%, Cartoony 18.7%, Strategy 13.3%, Colorful 5.2%, Indie 4.6%

  33. #33 Darwin's Paradox!
    73% matchVery Positive88% of 898 reviews2026
    Dev: ZDT StudioPub: KONAMI
    Windows
    Median: 3.6 hrsMean: 4.1 hrs≥1hr: 77%

    Step into a cinematic adventure as Darwin, a brilliant octopus trapped in a mysterious industrial world. Use his unique abilities - swimming, wall-climbing, shooting ink, camouflage, and more - to overcome traps and escape.

    Why similar: Cartoony 23.6%, Cute 23.6%, Action 14.5%, Comedy 12.6%, Adventure 9.8%

  34. #34 Cyber Tower 2048
    75% matchVery Positive87% of 101 reviews2025
    Dev: Galactic Geckon
    Windows

    Cyber Tower 2048 is an action tower defense game where players fight insectoids by building defenses and developing tactics.

    Why similar: Tower Defense 56.6%, Bullet Hell 15.3%, Action 6.7%, Colorful 5.8%, Strategy 5.4%

  35. #35 Fort Defense
    77% matchMostly Positive77% of 423 reviews2015
    Dev: CreobitPub: 8Floor
    Windows · Mac
    Median: 3.5 hrsMean: 7.5 hrs≥1hr: 96%

    All hands on deck! Pirate armada dead ahead! Take part in an uncompromising struggle repelling freebooters' assaults. Watch out, the enemy may catch the tide for ruining your fortress. Build towers, collect crystals, upgrade spells and believe in your victory!

    Why similar: Tower Defense 51.1%, Strategy 12.1%, Isometric 11.8%, Tactical 7.7%, Casual 5.6%

  36. #36 No Creeps Were Harmed TD
    74% matchVery Positive89% of 492 reviews2024
    Dev: MinMax Games Ltd.
    Windows
    Median: 2.9 hrsMean: 5.6 hrs≥1hr: 76%

    Employ lethal turrets, traps, and gadgets to defend against an onslaught of evolving creeps! Step into a twisted, hyper 3D, mind bending realm. Upgrade and adapt your defenses. Become a master maze crafter. Collect bizarre artifacts. Rush creeps for lucrative rewards, and succumb to greed!

    Why similar: Tower Defense 52.5%, Survival 17.1%, Strategy 12.5%, Tactical 8.4%, Colorful 3.4%

  37. #37 Quacker Bros : First Heist
    74% matchVery Positive94% of 100 reviews2024
    Dev: Reima Project
    Windows

    Quacker Bros is a roguelike TD game about protecting your bounty from the intercepting chicken Mafia! Survive until the help comes and you can finally enjoy the blood and sweat of your heist!

    Why similar: Tower Defense 44.4%, Bullet Hell 19.6%, Strategy 11.6%, Cute 8.4%, Comedy 7%

  38. #38 NEO AQUARIUM - The King of Crustaceans -
    75% matchMostly Positive79% of 349 reviews2015
    Dev: Calappa GamesPub: PLAYISM
    Windows
    Median: 3.2 hrsMean: 3.5 hrs≥1hr: 84%

    YOU GET TO CONTROL UNIQUE CREATURES LIKE LOBSTERS, CRABS AND BARNACLES, IN A WILD WATER WORLD THAT EXCEEDS ALL HUMAN SENSE.

    Why similar: Underwater 60.8%, Bullet Hell 11.5%, Survival 8.3%, Action 6.7%, Indie 6.6%

  39. #39 Dive The Depths
    73% matchMostly Positive77% of 112 reviews2025
    Dev: FrizuoPub: Starpixel Studios
    Windows

    Dive The Depths is an action-roguelike set beneath the ocean's surface. As a humble diver, you must navigate the world filled with bizarre sea creatures, submerged ruins, and forgotten histories. Can you conquer the depths and unravel the secrets that hidden beneath the waves?

    Why similar: Underwater 79.5%, Singleplayer 4.8%, 2D 4.5%, Action 4.4%, Adventure 3.4%

  40. #40 Crystal Guardians TD
    72% matchVery Positive88% of 115 reviews2024
    Dev: Green Pine Studios
    Windows

    Crystal Guardians is a tower defense game with rogue-like elements. Fight of waves and defend the world crystal. Gear up your towers with a powerful combination of items for your strategy. In an ever expanding map, find hidden powers and conquer the enemies.

    Why similar: Tower Defense 39.2%, Isometric 11.2%, Tactical 10.7%, Base Building 9.8%, Strategy 9.7%

  41. #41 Fire at Campsite
    72% matchVery Positive82% of 57 reviews2025
    Dev: Salvador PalmaPub: ZOO Studios
    Windows · Mac · Linux

    Protect the campsite in this Single-Tower-Defense game where you play as a campfire against the local wildlife! With many abilities and characters at your disposal, try new builds, synergies, and combos to make those animals run away with fear!

    Why similar: Tower Defense 33.1%, Bullet Hell 16.1%, Cartoony 12%, Strategy 9.8%, Tactical 9.7%

  42. #42 PolyCore Defense
    73% matchVery Positive90% of 58 reviews2022
    Dev: TorksGame
    Windows

    PolyCore Defense is a tower defense game where you have to raise your defenses in order to defend your core. Build unique turrets, upgrade them with special effects and use abilities to survive waves of enemies that are trying to destroy your core!

    Why similar: Tower Defense 53.4%, Strategy 13.4%, Survival 9.4%, Tactical 7.3%, Casual 4.2%

  43. #43 Age of Defense: Prehistory
    71% matchVery Positive86% of 174 reviews2024
    Dev: Battlecruiser GamesPub: Valkyrie Initiative
    Windows
    Median: 42 minMean: 3.6 hrs≥1hr: 37%

    The most addicting tower defense game, packed with monsters and tough defenders, all of which fit perfectly into the cartoonish environment. Prehistory is a prologue for the main story Age of Defense.

    Why similar: Tower Defense 36%, Cartoon 12.2%, Tactical 10.3%, Cartoony 10.1%, Strategy 9.4%

  44. #44 Kingdom Rush Frontiers - Tower Defense
    71% matchOverwhelmingly Positive97% of 10,533 reviews2016
    Dev: Ironhide Game Studio
    Windows · Mac · Linux
    Median: 8.7 hrsMean: 21.0 hrs≥1hr: 92%

    Command your troops through an epic (mis)adventure as you defend exotic lands from dragons, man-eating plants, and ghastly denizens of the underworld -all with flashy new towers, levels, heroes, and more goodies to help you crush your foes in this Fantasy Action Tower Defense game!

    Why similar: Tower Defense 56.5%, Cartoon 13.3%, Strategy 12.3%, Casual 3.7%, 2D 3.3%

  45. #45 Defendoooooor!!
    76% matchMixed45% of 69 reviews2017
    Dev: White Dog GamesPub: SA Industry
    Windows
    Median: 54 minMean: 14.1 hrs≥1hr: 47%

    In Defendoooooor!!!, it's your job to fight an alien invasion.

    Why similar: Tower Defense 42.5%, Cartoony 18.7%, Action 11.9%, Indie 10.8%, Adventure 8.2%

  46. #46 Towerful Defense: A Rogue TD
    71% matchMostly Positive74% of 237 reviews2024
    Dev: Mini Fun Games
    Windows · Mac · Linux
    Median: 2.7 hrsMean: 4.4 hrs≥1hr: 68%

    A roguelike tower defense where you control a single tower to fight against hordes of aliens coming from all directions. Pick your tower, equip up to 4 skills, and choose from a variety of traits and unique effect items to craft powerful builds that lead you to victory.

    Why similar: Tower Defense 43.1%, Survival 19.7%, Bullet Hell 18.4%, Strategy 10.5%, Casual 3.6%

  47. #47 Rift Riff
    69% matchVery Positive96% of 385 reviews2025
    Dev: Adriaan de Jongh
    Windows · Mac · Linux

    Jump a rift, fight off monsters, plunder their world. A strategic mix of juicy tower loadouts, varied monster behaviors, and forgiving mechanics.

    Why similar: Tower Defense 39.1%, Base Building 15.2%, Isometric 12.9%, Survival 12.6%, Strategy 9.4%

  48. #48 XENOBREAKERS: Classic Tower Defense
    70% matchVery Positive85% of 86 reviews2025
    Dev: Couch Potato Studios
    Windows

    Defend Billy and his crew on their way to the extraction zone! You have been authorized to use the defense system. Protect them from giant bugs, malfunctioning droids and more...

    Why similar: Strategy 35.2%, Tactical 21.5%, Tower Defense 14.4%, Indie 11.3%, Singleplayer 7.2%

  49. #49 Holo vs Robo
    67% matchOverwhelmingly Positive98% of 563 reviews2026
    Dev: Pompmaker1Pub: holo Indie
    Windows
    Median: 2.5 hrsMean: 5.0 hrs≥1hr: 82%

    Build a strong defense of hololive dolls to defeat a robot army in this exciting hololive-themed tower defense game!!

    Why similar: Tower Defense 52.7%, Strategy 22.1%, Cute 9.4%, Comedy 6.4%, 2D 3.8%

  50. #50 Mini Tank Mayhem
    68% matchVery Positive92% of 100 reviews2026
    Dev: Algorocks
    Windows

    Mini Tank Mayhem is a roguelike deck-building tower defense game where you command a powerful mini-tank to repel waves of alien invaders. Craft your very own deck, deploy strategic defenses, and unleash devastating combos to protect Earth from pesky aliens!

    Why similar: Tower Defense 49.3%, Cartoony 12.1%, Cute 11.6%, Strategy 11.5%, Tactical 9.1%

  51. #51 Shrimp.io
    69% matchVery Positive84% of 266 reviews2024
    Dev: VuVuu
    Windows

    A Shrimp Based Bullet Heaven. Kill creatures, Level up & pick from 3 upgrades to unalive thousands more.

    Why similar: Underwater 37.5%, Strategy 19.7%, Bullet Hell 18.3%, Casual 9.9%, Action 8%

  52. #52 Kingdom Rush - Tower Defense
    68% matchOverwhelmingly Positive97% of 16,766 reviews2014
    Dev: Ironhide Game Studio
    Windows · Mac · Linux
    Median: 5.0 hrsMean: 16.3 hrs≥1hr: 86%

    Get ready for an epic journey to defend your kingdom against hordes of orcs, trolls, evil wizards and other nasty fiends using a vast arsenal of towers and spells at your command!Fight on forests, mountains and wastelands, customizing your defensive strategy with different tower upgrades and specializations!

    Why similar: Tower Defense 52.4%, Cartoon 9.2%, Strategy 9%, Cartoony 7.8%, Tactical 7.2%

  53. #53 Ocean Keeper Co-op Drill Multiplayer
    67% matchMostly Positive79% of 165 reviews2025
    Dev: RetroStyle Games
    Windows

    Dive into the Ocean Keeper – a cooperative roguelike where four survival miners defend their Mech Spider, fight with endless hordes of monsters, and dig for resources. Team up with your friends, upgrade between waves, and survive the deep caves, full of treasures… if you can.

    Why similar: Tower Defense 81.6%, Action 8.4%, 2D 6.3%, Adventure 3.7%

  54. #54 Squids Odyssey
    70% matchMostly Positive78% of 50 reviews2018
    Dev: The Game Bakers
    Windows

    Build your team of Squid heroes for epic turn-based battles against corrupted crabs and shrimps! Steev and the rest of the Squids are in danger! An infectious ooze is corrupting their world, and this band of unlikely heroes needs to fight back to save their kingdom.

    Why similar: Cartoon 22.1%, Strategy 18.3%, Comedy 17.2%, Indie 12.4%, Adventure 10.6%

  55. #55 Ocean Keeper: Dome Survival
    66% matchMostly Positive80% of 904 reviews2025
    Dev: RetroStyle Games
    Windows · Mac · Linux
    Median: 1.9 hrsMean: 3.7 hrs≥1hr: 63%

    Explore dungeons, fight hordes of monsters and survive on a huge map. This is Ocean Keeper - an action roguelike with tower defense elements. Mine resources in caves, customize your Mech Spider, upgrade different weapons and face dangerous bosses that won't leave you a chance!

    Why similar: Action 31.6%, 2D 28.6%, Adventure 19.9%, Singleplayer 19.9%

  56. #56 Ocean Punk
    67% matchMostly Positive80% of 169 reviews2024
    Dev: Infinite Studio
    Windows

    Explore a fantasy ocean-punk world, braving the deep with steam-powered marvels. Discover mysterious underwater treasures, but scarcity and ecological crises test survival. Rise, build, confront foes in this pixel-art ocean survival journey!

    Why similar: Survival 33.4%, Base Building 30.3%, Strategy 16.6%, Indie 5.7%, 2D 5.5%

  57. #57 McDROID
    70% matchMostly Positive74% of 216 reviews2014
    Dev: Elefantopia
    Windows
    Median: 3.3 hrsMean: 4.3 hrs≥1hr: 93%

    Farm, Build, Defend, in the Galaxy's only Arcade-Tower-Defense.

    Why similar: Tower Defense 39.8%, Base Building 17.5%, Cartoony 15.7%, Strategy 9.4%, Survival 9%

  58. #58 Galaxy Defense War
    65% matchVery Positive97% of 145 reviews2025
    Dev: Zero Space
    Windows

    'Galaxy Defense War' is a roguelike tower defense game where you need to select suitable galactic principles from randomly dropped heroes and equipment to form a combat-ready team to resist alien invaders.

    Why similar: Tower Defense 45%, Strategy 16.6%, Base Building 16.2%, Cartoon 13%, 2D 3.5%

  59. #59 Rogue Tower
    65% matchVery Positive83% of 5,896 reviews2022
    Dev: Die of Death Games
    Windows
    Median: 10.7 hrsMean: 20.3 hrs≥1hr: 91%

    Rogue Tower is a tower defense game with roguelike elements and a continuously expanding path which you can influence. Unlock, build, upgrade, expand, defend.

    Why similar: Tower Defense 58.4%, Strategy 12.8%, Base Building 10.1%, Isometric 6.5%, Cartoony 4.9%

  60. #60 Shelldiver
    61% matchOverwhelmingly Positive99% of 15,422 reviews2025
    Dev: Gagonfe
    Windows
    Median: 3.9 hrsMean: 4.2 hrs≥1hr: 90%

    Take a deep breath and dive right into this cozy incremental game about a senior turtle trying to start a business selling jellyfish. Upgrade your equipment, explore biomes, and help your turtly village!

    Why similar: Cute 23.8%, Strategy 22.2%, Casual 19.1%, Colorful 10.7%, 2D 9.4%

Modeli
Operation Octo cover art

Games Like Operation Octo

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