Games Like They Are Billions

Diplomacy is Not an Option is a strategy game set in a medieval fantasy world. Build your town and defenses, raise huge armies and fight against massive hordes of enemies. How long can you survive?

Why similar: Colony Sim 24.5%, Base Building 19.8%, Zombies 15.9%, RTS 9.6%, Tower Defense 7.6%

Why You'll Like It: It closely matches the resource gathering, workforce management, wall building, and desperate defense against huge attacking armies.

Age of Darkness: Final Stand is a dark fantasy survival RTS where you must illuminate, build and defend humanity’s last bastion against hordes of Nightmares. Set in the remnants of a kingdom consumed by a deadly fog, you decide. Will you hide in the light? Or take back your world.

Why similar: Base Building 27.4%, RTS 22.4%, Tower Defense 18.5%, Survival 11%, Strategy 6.7%

Why You'll Like It: A dark RTS survival game built around expanding a fortified settlement and holding back enormous waves of nightmare creatures.

Choose any real region from the world. Choose your base of operations, then rebuild and readapt the buildings around you to create a self-sustaining settlement. Take charge of a group of survivors from your city. And when the night falls - Defend the zone from the infected!

Why similar: Base Building 24.9%, Colony Sim 17%, Zombies 16.8%, RTS 11.2%, City Builder 10%

Why You'll Like It: You reclaim a real-world city, organize survivors, establish production, and defend your enclave from roaming zombie threats.

From Glory To Goo is a Sci-Fi survival RTS set on an alien world. Serve as humanity's bulwark by establishing a colony and supporting your colonists still in orbit. But beware, for The Goo, a relentless and shape-shifting force approaches from all sides, even above and below.

Why similar: Colony Sim 18.6%, Base Building 16.8%, RTS 13.3%, Tower Defense 10.4%, Zombies 10.2%

Why You'll Like It: A compact RTS focused on harvesting resources, expanding a military base, and constructing defenses against relentless alien swarms.

Design and build fortresses brick by brick to stand against endless hordes of Horrors in this real-time strategy game with resource management, siege defense, and exploration. Lead from the ramparts, push back the darkness, and hold fast against the creatures of the Mist.

Why similar: Colony Sim 25.9%, Base Building 21.7%, RTS 15.2%, City Builder 10.6%, Survival 9.1%

Why You'll Like It: Its core loop of constructing detailed fortresses brick by brick and defending them from nightly monster hordes strongly echoes They Are Billions' defensive appeal.

From the Command & Conquer veterans at Petroglyph comes the first ever survival RTS set in the savage world of Conan the Barbarian. Play solo or team up in multiplayer in Conan Unconquered’s action-packed co-op Mode where you build a shared stronghold and fend off the hordes together.

Why similar: RTS 29.3%, Base Building 17.7%, Strategy 15.6%, City Builder 14.6%, Tower Defense 12.3%

Why You'll Like It: This real-time survival RTS centers on rapidly developing a base, creating layered defenses, and surviving increasingly punishing enemy waves.

Build, scavenge, craft, and perform occult rituals to survive in a demon-infested, post-apocalyptic colony simulation. Will you survive Judgment day?

Why similar: Colony Sim 33.7%, Base Building 24.9%, Survival 12%, Real-Time with Pause 6.4% ★, Post-apocalyptic 6.3%

Why You'll Like It: It blends survivor colony management, crafting, research, and base defense during a demon-infested apocalypse.

Your village must survive for 13 days! Gather resources, expand, explore the underground for riches, and train soldiers to defend against hordes of the undead.

Why similar: Base Building 25%, Tower Defense 17%, RTS 15.6%, Zombies 14.5%, Survival 11.2%

Why You'll Like It: It is a side-view settlement builder where recruiting workers, producing supplies, and erecting defenses are vital to surviving undead attacks.

“Alien Marauder” is a real-time strategy game with survival and confrontation theme. In this game, you will be the leader to a treacherous alien planet, build and defend base to survive against the vexan waves. Make the right decision!

Why similar: Colony Sim 26.4%, Base Building 20.6%, RTS 17.6%, Tower Defense 11.3%, Survival 9.7%

Why You'll Like It: A survival RTS where you build up a colony under pressure from hostile alien attacks and must balance economy with military preparedness.

The world after a nuclear war. Manage the settlement, learn technology, make decisions, produce weapons, ammunition, organize defense, raid for supplies on other areas, do not let residents die, survive the nuclear winter.

Why similar: Base Building 31.1%, RTS 10.7%, Strategy 10.2%, Survival 9.4%, Colony Sim 8.9%

Why You'll Like It: A bleak post-apocalyptic colony builder centered on scavenging, production chains, survivor needs, and defending a fragile settlement.

A brutal godlike village sim that melds the god game, management, and tower defense genres! Fight off hoards of monsters at night, and expand your village in the day time. Inspired by games like Black and White, Rimworld, and Dwarf Fortress but not quite like any of them.

Why similar: Colony Sim 34.4%, Tower Defense 18.1%, Base Building 17.9%, City Builder 12.7%, Survival 9.2%

Why You'll Like It: Its village-building, resource logistics, magical defenses, and escalating nightly enemy assaults make it an excellent strategic alternative.

A great catastrophe has come, and you, who are on duty, crash and trapped in a Zed Zone. There are zombies and monsters everywhere, In order to escape, by collecting materials, upgrading skills, building shelters, defeating zombie waves and mysterious mechs, chasing a glimmer of hope.

Why similar: Zombies 44.5%, Survival 27.7%, Post-apocalyptic 15.2%, Building 12.5%

Why You'll Like It: This zombie colony-management game emphasizes scavenging, survivor assignments, base development, and keeping the undead outside your perimeter.

The Riftbreaker is a solo or Co-op base-building, survival game with Action-RPG elements for up to 4 players. Hack & slash countless hordes of enemies. Build up your base, craft powerful weapons and research new inventions to survive.

Why similar: Base Building 35.1%, Tower Defense 18.3%, RTS 17.3%, Survival 12.2%, Building 5.6%

Why You'll Like It: Though more action-focused, it delivers satisfying resource networks, power management, automated defenses, and huge hostile creature assaults.

Survive and thrive in a post-apocalyptic future — resources are scarce, but opportunity calls! Build the ultimate disaster proof colony, protect your colonists, and restore civilization to a devastated world.

Why similar: Colony Sim 28.8%, Base Building 19.1%, City Builder 15.4%, Survival 12.2%, Strategy 8.7%

Why You'll Like It: A post-apocalyptic colony builder with scavenging expeditions, specialist management, hazards, and threats that demand a prepared settlement.

Colony Survival is a unique first-person strategy game developed by a two-man team. Build your own colony in a voxel world. Command guards, farmers, miners and other colonists. Defend your colony against the horde of monsters that attacks every night!

Why similar: Colony Sim 35.1%, Base Building 23.8%, Survival 11.3%, Zombies 8.9%, City Builder 5.9%

Why You'll Like It: Build a self-sufficient colony with workers, guards, walls, and defenses against enemies that attack every night.

Frostpunk is the first society survival game. As the ruler of the last city on Earth, it is your duty to manage both its citizens and infrastructure. What decisions will you make to ensure your society's survival? What will you do when pushed to breaking point? Who will you become in the process?

Why similar: Colony Sim 23.9%, City Builder 13.6%, Steampunk 12% ★, Survival 11.8%, Base Building 10.5%

Why You'll Like It: It trades horde combat for brutal survival decisions, but its tense city management and struggle to keep a desperate population alive are similarly compelling.

Build and manage your own castle settlement in a land reclaimed by wilderness. With detailed management, survival strategy, and a moddable sandbox world, Going Medieval challenges you to build the mightiest colony this side of the apocalypse.

Why similar: Colony Sim 29.1%, Base Building 23.2%, RTS 17.7%, City Builder 10.9%, Survival 10.3%

Why You'll Like It: Its detailed colony simulation lets you construct layered fortifications, manage settlers and supplies, and repel hostile raiders.

Survival strategy game set in a world inspired by Slavic mythology and the nature of Eastern Europe. Build your settlement, protect its dwellers, and help them prepare for the coming Darkness.

Why similar: Colony Sim 24.2%, Base Building 18.6%, RTS 16.7%, Tower Defense 10.9%, Survival 8.9%

Why You'll Like It: You develop a settlement, prepare defenses, and survive recurring supernatural dangers as darkness steadily becomes more threatening.

In a world overrun by the undead, build a lab to fight back with science. Manage survivors, gather vital resources, and turn zombies into allies. Defend your base and research the cure to reclaim humanity.

Why similar: Colony Sim 23.3%, Base Building 17.7%, Zombies 13.9%, Tower Defense 11%, City Builder 8.3%

Why You'll Like It: It offers a lighter but thematically direct colony-management loop of containing zombies, running a research base, and turning infected into workers.

A sci-fi colony sim driven by an intelligent AI storyteller. Generates stories by simulating psychology, ecology, gunplay, melee combat, climate, biomes, diplomacy, interpersonal relationships, art, medicine, trade, and more.

Why similar: Colony Sim 38.4%, Base Building 29.9%, Survival 12%, City Builder 7.5%, Strategy 5.2%

Why You'll Like It: The emergent colony simulation, defensive construction, research progression, and unpredictable raids suit players who enjoy making a settlement endure under pressure.

Build a castle by day and defend it by night. Becastled blends cozy city-building with challenging tower defense strategy. Lead the Sun Kingdom’s last stand against the Moon Beasts and end the ancient conflict between light and darkness!

Why similar: Base Building 31.9%, Colony Sim 21.4%, RTS 15.2%, City Builder 11.4%, Strategy 7.2%

Why You'll Like It: Build a medieval town by day, establish defensive walls and towers, and prepare for recurring nighttime attacks from hostile forces.

Endzone is a post-apocalyptic survival city builder, where you start a new civilization with a group of people after an ecological disaster. Build them a new home and ensure their survival in a shattered world, threatened by constant radiation, toxic rain, sandstorms and droughts.

Why similar: Base Building 22.8%, City Builder 19.4%, Colony Sim 18.2%, Survival 14.9%, Post-apocalyptic 8.6%

Why You'll Like It: A post-apocalyptic settlement builder focused on maintaining production, resources, health, and population survival in a devastated world.

Rebuild a ruined city in this post-apocalyptic mix of strategy and simulation. Manage survivors, scavenge for food and supplies, deal with rival gangs, illness, interpersonal strife and zombie attacks.

Why similar: Colony Sim 26.8%, Base Building 17.4%, Zombies 14.5%, City Builder 9.4%, Survival 9.3%

Why You'll Like It: This is a more turn-based take on zombie settlement strategy, asking you to reclaim territory, manage survivors, and protect a growing community.

Factorio is a game about building and creating automated factories to produce items of increasing complexity, within an infinite 2D world. Use your imagination to design your factory, combine simple elements into ingenious structures, and finally protect it from the creatures who don't really like you.

Why similar: Base Building 55.6%, Survival 11.9%, Resource Management 9.1%, City Builder 7.3%, Strategy 6.9%

Why You'll Like It: Its factory-building focus differs from a colony sim, but expanding while designing defenses against ever-larger hostile swarms creates a similarly compulsive pressure.

Command swarms of warriors at an unprecedented scale of warfare in this blend of RTS and base-building. Lead ant colonies against the many fearsome threats of the insect world, while building intricate nests, developing pheromone-based tactics, and evolving to meet growing dangers.

Why similar: Colony Sim 30.7%, Base Building 25.7%, City Builder 12.4%, Survival 10.5%, Strategy 6.5%

Why You'll Like It: This real-time ant-colony strategy game captures the satisfaction of growing a functioning colony while defending it from dangerous invaders.

An open-ended factory management game with RTS and tower defense elements.

Why similar: Base Building 35.8%, RTS 23.8%, Tower Defense 21%, Strategy 7.1%, Resource Management 6.1%

Why You'll Like It: It combines automated resource extraction and production chains with highly customizable walls, turrets, and wave-based base defense.

Kingdoms and Castles is a city-building simulation game about growing a kingdom from a tiny hamlet to a sprawling city and imposing castle. Make trade agreements, alliance, and war with neighboring AI controlled kingdoms. Each villager and resource is individually simulated.

Why similar: Colony Sim 29.4%, Base Building 18.5%, RTS 14.6%, City Builder 13.7%, Survival 8%

Why You'll Like It: It offers approachable city building with walls, towers, military units, and periodic threats from dragons and invading armies.

Greetings sire! Your stronghold awaits you. Build a castle economy, besiege unforgettable villains and return to the 'castle sim' that started it all. Experience this classic RTS with upgraded visuals, modernised gameplay, Steam multiplayer and a new campaign.

Why similar: Colony Sim 24.1%, Base Building 19%, RTS 16.3%, City Builder 13%, Tower Defense 11.7%

Why You'll Like It: A classic castle-building RTS where food, economy, fortifications, and defensive positioning all matter when enemies begin sieging your settlement.

IXION is an unrelenting, city-building odyssey across the stars. As Administrator of the Tiqqun, DOLOS’ prototype space station, you are tasked with balancing preservation and exploration as you manage infrastructure, resources and crew. Can you keep the flame of humanity alight in the cold dark?

Why similar: Colony Sim 27.8%, Base Building 20.1%, City Builder 14.7%, Survival 11.9%, Strategy 6.5%

Craft The World is a unique sandbox strategy game, the mix of Dungeon Keeper, Terraria and Dwarf Fortress. Explore a random generated world populated by dangerous creatures, build a dwarf fortress, gather resources, and craft all the items, weapons, and armor you need.

Why similar: Colony Sim 52.7%, Survival 13.6%, Building 10.4%, City Builder 8.2%, Strategy 6.1%

Why You'll Like It: This dwarven colony builder combines digging, crafting, fortifying a home, and defending it from repeated monster incursions.

A dark fantasy city builder where you must rebuild civilization in the face of apocalyptic rains. As the Queen’s Viceroy, lead humans, beavers, lizards, foxes, and harpies to reclaim the wilderness and secure a future for civilization's last survivors.

Why similar: Colony Sim 25.7%, Base Building 21.5%, RTS 15.5%, City Builder 10.5%, Survival 9.2%

Build, survive, explore. Design your city, manage resource chains and workers, Send ships on expedition, trade with cities, discover mysterious dungeons and uncover secrets of ancients.

Why similar: Colony Sim 38.9%, Base Building 22.1%, Survival 12.9%, City Builder 9.8%, Strategy 5.9%

Why You'll Like It: A compact settlement-management game where you gather resources, assign villagers, expand your village, and defend it from nightly monsters.

Build your defense base to fight back the undead hordes of Mars and secure the future of the red planet. MarZ is a game of strategy and tactical defense where you must carefully manage your crew and resources as you try to uncover the terrible secrets of the undead.

Why similar: Tower Defense 20.8%, RTS 20.7%, Base Building 19.4%, Zombies 17.8%, Strategy 8.3%

After a nuclear war life on the surface became impossible. A 300m thick radioactive fog covered the Earth. We are looking for bold active people to manage the process of restoring life on Earth. Join!

Why similar: Colony Sim 28.8%, Base Building 18.6%, City Builder 14%, Tower Defense 12.1%, Strategy 6.7%

Develop, expand, and advance your city in a society survival game set 30 years after an apocalyptic blizzard ravaged Earth. In Frostpunk 2, you face not only the perils of never-ending winter, but also the powerful factions that watch your every step inside the Council Hall.

Why similar: City Builder 22.1%, Survival 17.9%, Base Building 12.8%, Colony Sim 10.8%, Strategy 10.4%

Humans are long gone. In a world struck by droughts and toxic waste, will your lumberpunk beavers do any better? A sandbox city-building game featuring ingenious animals, vertical architecture, water physics, and terraforming. Contains high amounts of wood.

Why similar: Colony Sim 31.5%, Base Building 22.1%, City Builder 15.3%, Survival 9.6%, Building 5.6%

Oxygen Not Included is a space-colony simulation game. Deep inside an alien space rock your industrious crew will need to master science, overcome strange new lifeforms, and harness incredible space tech to survive, and possibly, thrive.

Why similar: Colony Sim 40.6%, Base Building 31.2%, Survival 12.7%, Building 4.6%, Resource Management 4.4%

The Wandering Village is a city-building simulation game on the back of a giant, wandering creature. Build your settlement and form a symbiotic relationship with the colossus. Will you survive together in this hostile, yet beautiful post-apocalyptic world, contaminated by poisonous plants?

Why similar: Colony Sim 30.6%, Base Building 17.6%, RTS 14.7%, City Builder 13.3%, Survival 8.3%

Here Comes the Swarm is a survival RTS with a pause button! Create your strategy, build, manage, and defend your settlements at your own pace. Take the fight to the hive mind and lead expeditions to deliver a deadly blow and eradicate your foes. Will you reclaim Ulora from the relentless Swarm?

Why similar: Colony Sim 22.2%, Base Building 18.7%, RTS 14.6%, Tower Defense 10.6%, Survival 8.7%

Guide a group of space settlers trying to establish a base on a remote planet. Grow food, collect energy, mine resources, survive disasters and build a self-sufficient colony in a harsh and unforgiving environment.

Why similar: Colony Sim 35.7%, Base Building 25.8%, City Builder 13.5%, Survival 9.8%, Strategy 5.4%

After Long Night is a sandbox survival RTS. Build and fortify your base, scavenge every corner for vital resources, craft deadly weapons, and raise a militia to fight off relentless zombie hordes that strike every night. In this world, scavenging isn't just survival—it's strategy, power and war.

Why similar: Colony Sim 20.2%, Base Building 16.8%, RTS 14.1%, Zombies 12.7%, Tower Defense 7%

Until We Die is a side-scrolling strategy game about defending your base where you have to run around as Ivan, assign tasks to people, and fight mutants in the post-apocalyptic subway!

Why similar: Base Building 26.3%, Colony Sim 25.1%, Tower Defense 14.9%, Survival 14%, Strategy 7.2%

New Cycle is a city building game with focus on survival. After an apocalyptic series of solar flares, human society has been thrown into disarray. Establish a settlement and develop it all the way from humble beginnings to industrial metropolis.

Why similar: Colony Sim 25.5%, Base Building 19.7%, City Builder 11.2%, Survival 10.1%, Real-Time with Pause 8.8% ★

Build massive ocean cities and lead your people to prosperity in this post-apocalyptic survival colony sim. Featuring a physics-based 3D construction system, complex resource management, exploration, difficult political decisions, supply chains, and a robust sandbox mode.

Why similar: Colony Sim 33.5%, Base Building 26.9%, City Builder 11.7%, Post-apocalyptic 7.2%, Strategy 5.3%

Final Outpost is a survival strategy base-builder. You lead the last survivors of the apocalypse. Assign roles, craft tools, and manage resources carefully. Construct buildings, level up your citizens, and fortify your town against hordes of zombies. How many days can you survive?

Why similar: Colony Sim 18.5%, Base Building 18.2%, Zombies 11.8%, RTS 11.4%, Tower Defense 8.7%

Build and design the terrain while defending your stronghold against alien invasion in this unique Roguelike tower defense. Choose from 30 heroes, survive enemy waves, and upgrade a variety of destructive towers to hold the line!

Why similar: Base Building 30.2%, Tower Defense 23.8%, RTS 22.1%, Strategy 7.7%, Building 6%

Collect resources and establish a defense line before dark And then Facing countless enemies

Why similar: Base Building 29.9%, Tower Defense 29.2%, Survival 11.8%, Strategy 10%, Post-apocalyptic 8.1%

Embark on a space voyage with your ragtag crew of civilians in search of a new home. Build spaceships tile by tile, create optimal gas conditions, manage the needs and moods of their crew, encounter other space-faring groups, and explore the universe in this spaceship colony simulation.

Why similar: Colony Sim 30.7%, Base Building 24.6%, Survival 10.8%, City Builder 10.3%, Strategy 5.8%

Can you rebuild civilization after a zombie apocalypse? From the creator of Plague Inc. comes a unique blend of strategic simulation, survival city builder and ‘mini 4X’. Build post-apocalyptic settlements, harvest resources and shape society as you lead humanity out of the darkness.

Why similar: Colony Sim 31.2%, Base Building 19.1%, Zombies 17.1%, City Builder 11.7%, Post-apocalyptic 6.5%

Build and automate a lunar colony that Earth depends on. Mine regolith, run conveyor-and-drone factories above and below the surface, manage colonists, trade with rival Earth factions — and play a story campaign with multiple endings.

Why similar: Colony Sim 28.8%, Base Building 25.3%, RTS 10.3%, City Builder 9.1%, Survival 6.8%

Command distinct factions in a desperate struggle for power and resources in Tempest Rising - a classic RTS set on Earth after a nuclear war.

Why similar: RTS 57.7%, Base Building 23.9%, Strategy 16.5%, Isometric 0.8%, Singleplayer 0.6%

Protolife is an unique tower-based strategy game which gives you a direct control over the builder robot in a struggle against the hungry proto-life organism.

Why similar: Base Building 35.7%, RTS 29.7%, Tower Defense 24.9%, Strategy 8.7%, Singleplayer 0.7%

Endzone 2 is a post-apocalyptic survival colony builder, where you embark to secure humanity's survival after a cataclysmic disaster. Discover and repopulate the last habitable grounds, while the survival of your people hinges on your wits, foresight, and resilience in a harsh and unforgiving world.

Why similar: Colony Sim 32.5%, Base Building 20%, City Builder 12.5%, Survival 11.3%, Post-apocalyptic 7%

Protect and guide your people as you forge a town from untamed wilderness at the edge of the known world. Harvest raw materials, hunt, fish and farm to survive. Produce crafted items to trade, consume, equip and fight with as you battle for your survival against the elements and outside threats.

Why similar: Colony Sim 24.8%, Base Building 19.9%, RTS 16%, City Builder 12.1%, Survival 8.4%

Create a sprawling industrial city. Compete with other rival corporations on Titan for resources, territory, and power. Seek victory via technology, influence, warfare, or the wealth extracted from your citizens. Stake your claim to the Industries of Titan in this innovative sim/strategy game!

Why similar: Colony Sim 29%, Base Building 21.6%, City Builder 12.6%, Real-Time with Pause 11% ★, Post-apocalyptic 6.2%

A strategy game with a new kind of enemy, Calyx puts you in charge of a space mining outpost, locked in battle against powerful plant-aliens. Build your base, gather resources, assemble your forces, and take on the Calyx. With only an out-of-date AI for company, can you survive?

Why similar: Colony Sim 27.9%, Base Building 23.6%, RTS 19.4%, Tower Defense 14.8%, Strategy 5.7%

Darfall is a hero-based RPG city-building game that puts you in the role of a hero who must protect their home and help it grow! During the day, grow your hero’s might, find epic loot, master new abilities, and fortify your settlement. At night, survive the hordes of undead, until you triumph.

Why similar: Base Building 20.8%, Colony Sim 19.8%, RTS 16%, Zombies 12.8%, City Builder 9.5%

Deep Among the Swarm is a challenging survival RTS roguelite about surviving against thousands of enemies. Drill ever deeper underground while fighting the endless onslaught of the Swarm. Can you save humanity?

Why similar: Base Building 24%, RTS 20.1%, Tower Defense 15.1%, Survival 10.6%, Real-Time with Pause 9.5% ★

Corporate greed meets strategic planet-mining in Drill Core! Drill to the heart of planets while managing workers, researching cutting-edge tech, and fortifying against alien attacks. Will you prioritize efficiency and risk your workers' safety, or focus on defense for survival?

Why similar: Colony Sim 33.9%, Base Building 22.6%, Tower Defense 17.8%, City Builder 11.3%, Strategy 7.5%