- #1 GachaPon!
97% match7 user reviews100% of 7 reviews2024
Dev: EXFMRENEL Studios
Windows
In GachaPon!, your mission is to drop colorful capsules into the case and fuse them together, all in pursuit of creating the legendary Rainbow Gacha. Over thirty enchanting keychains, offering a unique twist to your gameplay! GachaPon! lets you customize your experience with endless possibilities.
Why similar: Physics 22.5%, Strategy 21.3%, Casual 14.7%, Arcade 11.2%, Puzzle 8.5%
- #2 Neon Merger
96% match3 user reviews100% of 3 reviews2025
Dev: MDB Games LLC
Windows
Click, Drag, and Drop shapes into each-other to merge them! A relaxing physics-based shape merging game. Play with a variety of colorful shapes in a limited play area with this simple yet addicting puzzle game. Get the highest score you can!
Why similar: Physics 26.3%, Strategy 18.4%, Casual 15.1%, Arcade 13.1%, Puzzle 11.4%
- #3 Droppy Ball
95% matchPositive100% of 12 reviews2025
Dev: Mojo Games Studio
Windows
Drop, combine, and explode your way to massive scores in Droppy Ball! Merge colorful spheres, unleash satisfying chain reactions, and chase the ultimate combo in this addictive physics puzzler.
Why similar: Strategy 28.4%, Casual 19.8%, Arcade 16.4%, Physics 14.7%, Colorful 7.3%
- #4 Merge Jam
96% matchNo user reviews2025
Dev: VectorUp Games
Windows
Merge balls to complete puzzles in this fun and addictive physics-based game! Fun, colorful and relaxing - good for hours of gameplay!
Why similar: Strategy 25.9%, Casual 18%, Arcade 15.2%, Physics 11.6%, Puzzle 9.7%
- #5 Set 'N Det
94% match3 user reviews100% of 3 reviews2022
Dev: Cilithocal Game Studios LLC
Windows · Mac · Linux
Solve puzzles with explosions! Casual 2D puzzle game with 72 levels/puzzles to solve.
Why similar: Strategy 30%, Casual 21.6%, Physics 19.9%, Puzzle 12%, Family Friendly 9.7%
- #6 Stupid Cars
94% matchPositive100% of 10 reviews2024
Dev: Gimbal Studio
Windows
Stupid Cars is pure chaotic fun! Speed cars up and slow them down — they never stop. One crash and it’s game over. Easy to learn, hard to master. The ultimate “one more go” arcade challenge. Play in VR or Flatscreen with 9 levels, leaderboards, achievements, and Turbo modes.
Why similar: Strategy 27%, Casual 19.7%, Action 16.8%, Arcade 15.1%, Puzzle 9.5%
- #7 The Chaotic Workshop
93% match1 user reviews100% of 1 reviews2018
Dev: Virtex Edge Design
Windows · Mac · Linux
Ever wanted to know what would happen if you hooked up a fire extinguisher to a crate of TNT inside a room full of pinball bouncers and proximity mines. Well now you can. Welcome to The Chaotic Workshop
Why similar: Physics 31%, Sandbox 21.7%, Strategy 14.5%, Puzzle 13.7%, Casual 10.7%
- #8 Project Arcade
92% match1 user reviews100% of 1 reviews2023
Dev: Antonio Figueiredo
Windows
A growing collection of mini-games. Train your memory, test your reflexes, and beat your personal best.
Why similar: Strategy 23.2%, Arcade 19.4%, Casual 15.5%, Logic 13.9%, Puzzle 11.6%
- #9 Wolf Sheep Cabbage
91% matchPositive100% of 17 reviews2023
Dev: JJZ
Windows
Wolves eat sheep, sheep eat vegetables. Utilize your wisdom to simultaneously transport the wolf, the sheep, and the cabbage to the destination!
Why similar: Strategy 24.7%, Physics 21.3%, Casual 17.1%, Puzzle 10.1%, Cute 7.3%
- #10 Gravity Maze
91% match1 user reviews100% of 1 reviews2022
Dev: Dennis GamingPub: Dennis Gaming
Windows · Linux
Gravity Maze is a physics maze game in which you get balls to the end by changing gravity
Why similar: Physics 22.8%, Strategy 19.3%, Arcade 16.7%, Family Friendly 10.1%, Casual 8.6%
- #11 Radium Lux
90% match4 user reviews100% of 4 reviews2025
Dev: Lukas JaeckelPub: Develobster
Windows
Radium Lux is a physics-based skill game with puzzle elements. The sphere that the player must navigate to the target is attracted by two tractor beams and gravity. Using these three forces from different directions enables the player to maneuver the sphere very organically through the level.
Why similar: Action 18.6%, Casual 18.1%, Arcade 16.8%, Physics 14.3%, Puzzle 10.7%
- #12 Spear Master
89% match9 user reviews100% of 10 reviews2020
Dev: Osarion
Windows
You are the son of a mighty hero. Now it's your turn to protect the world from an ancient evil.
Why similar: Casual 24.3%, Action 22.8%, Physics 19.5%, Arcade 12.6%, Puzzle 7.9%
- #13 Crazy Machines 2
88% matchMixed48% of 261 reviews2008
Dev: Fakt SoftwarePub: Viva Media
Windows
Median: 3.0 hrsMean: 4.3 hrs≥1hr: 89%
Crazy Machines 2 is packed with all new features to help you create your wackiest "Rube Goldberg-style" contraptions yet! All new elements, plus an amazing 3D physics engine lets you craft even more complex gadgets and effects.
Why similar: Strategy 28.8%, Physics 27.7%, Casual 24.1%, Puzzle 19.5%
- #14 Fruit Crawler
87% match2 user reviews100% of 2 reviews2019
Dev: IfThen Software LLC
Windows
Puzzle through different difficulty levels and hazards. Collect fruit to increase your tail segments. Avoid the pokey bits and explosions. Also, don't run into yourself.
Why similar: Arcade 18.8%, Physics 18.6%, Puzzle 11.4%, Action 11.1%, Family Friendly 7.9%
- #15 Crazy Machines 1.5
86% match3 user reviews67% of 3 reviews2008
Dev: Fakt SoftwarePub: Viva Media
Windows
Create Your Own Zany "Rube Goldberg" Devices! Go crazy with over 200 brand new gizmo-twistin' levels! Enjoy all-new elements, music, backgrounds and more. Start off in the Inventor's Training Camp to sharpen your skills.
Why similar: Strategy 31.5%, Physics 24.8%, Casual 23.7%, Puzzle 20%
- #16 Dinobot and Tiara Present: ApplePop
84% matchMixed63% of 16 reviews2023
Dev: StarSystemStudios
Windows
Apple Pop is a super relaxing, super satisfying Puzzle Popper with powerups, beautiful scenery and major combo's for literally anyone to play to pass the time or to let off some stress. Apple Pop is Inspired by the great ''Peggle'' Games.
Why similar: Strategy 27.7%, Casual 19.5%, Arcade 16.4%, Physics 15%, Puzzle 10.4%
- #17 HAKO TOWER
84% match1 user reviews100% of 1 reviews2026
Dev: DOTzLUM
Windows
Welcome to HAKO TOWER, a physics-based tower builder! Stack blocks, scream as they fall, and dodge obstacles. And... adore Hako. A tiny hamster who just stares at you... He can’t help you... He’s... just... a hamster, after all. Test your luck and skill!
Why similar: Physics 22.4%, Casual 15.6%, Strategy 13.9%, Arcade 12.3%, Action 10.2%
- #18 Crazy Machines
83% matchVery Positive82% of 204 reviews2008
Dev: Fakt SoftwarePub: Viva Media
Windows
Median: 36 minMean: 2.8 hrs≥1hr: 40%
Turn the crank, rotate the gears, push the levers, Use the catapult, explode it, or fly it...From grilling sausages with a pulley, gears, rubberbands and a candle to firing a cannon with a basketball, these wacky brain-teasers will light up your imagination with creative and addictive fun.
Why similar: Physics 32.2%, Strategy 26.2%, Puzzle 22.4%, Casual 19.2%
- #19 Out Of Shapes
82% match1 user reviews100% of 1 reviews2023
Dev: W3zl3y3
Windows
Drop matching shapes on each other to create larger shapes. The more shapes you combine in one drop the higher your combo score. The game ends when you run out of space.
Why similar: Strategy 35.8%, Casual 25%, Arcade 19.7%, Puzzle 12.4%, 2D 5.5%
- #20 Jack Lumber
82% matchMixed63% of 367 reviews2013
Dev: Owlchemy Labs
Windows · Mac · Linux
Median: 1.5 hrsMean: 3.2 hrs≥1hr: 57%
A tree killed his granny and now he is out for revenge. Meet Jack Lumber, the supernatural lumberjack who hates trees, loves animals, and hates trees. Did we say that twice? The guy really hates trees, and boy does he have an axe to grind.
Why similar: Casual 30.7%, Strategy 24.7%, Action 17.6%, Arcade 13.7%, Puzzle 8.2%
- #21 Crayon Physics Deluxe
81% matchVery Positive86% of 1,176 reviews2009
Dev: Kloonigames
Windows · Mac
Median: 30 minMean: 1.7 hrs≥1hr: 28%
Crayon Physics Deluxe is a 2D physics puzzle / sandbox game, in which you get to experience what it would be like if your drawings would be magically transformed into real physical objects. Solve puzzles with your artistic vision and creative use of physics.
Why similar: Physics 36%, Puzzle 18.1%, Casual 16.4%, Family Friendly 9.5%, Sandbox 5.6%
- #22 Marudachi
81% match1 user reviews100% of 1 reviews2024
Dev: Niko Salocin
Windows
Marudachi is an action puzzle game that uses different Maru's abilities to let Maru get into the place they can't go on their own.
Why similar: Strategy 26.5%, Action 18%, Casual 17.6%, Physics 12.1%, Puzzle 9.8%
- #23 Halloween 2048
79% match1 user reviews100% of 1 reviews2025
Dev: Grendel Enterprises, L.L.C.
Windows · Mac
Halloween 2048 is a Halloween themed tile merge game better than the original. Complete all 28 levels, reach All Saints day and win the game! All levels have Halloween images that must be matched and merged. Earn bonus actions to remove a tile or tiles, swap tile positions, or increase board size.
Why similar: Strategy 27.7%, Casual 19.1%, Arcade 16.6%, Puzzle 10.6%, Logic 7.8%
- #24 Trap Them
80% matchVery Positive81% of 63 reviews2015
Dev: Juri Schupilo
Windows
Median: 4.2 hrsMean: 4.6 hrs≥1hr: 97%
Trap Them revolves around demanding puzzle gameplay about outsmarting and trapping the enemies while avoiding getting trapped yourself. Collect all the crystals without getting caught by the RoboTTech robots while exploring the depths of the mountain.
Why similar: Strategy 24%, Casual 17.3%, Action 16.7%, Puzzle 13.7%, Arcade 10.7%
- #25 Bunny Box Breakout
79% match5 user reviews100% of 5 reviews2022
Dev: Brain Haze
Windows
Break blocks. Rescue bunnies. Collect bunnies. All the bunnies. ALL THE BUNNIES.
Why similar: Arcade 22.5%, Strategy 22.4%, Casual 19.8%, Puzzle 17.9%, Cute 10.2%
- #26 VFurrika!
77% matchVery Positive92% of 186 reviews2023
Dev: LuiroïLeFuretPub: Lui&Co
Windows
VFurrika! is an addictive puzzle game that combines the charm of your favourite VFur streamers with strategic gameplay. Drop your favorite furry VTuber into a glass and witness them merging into other VTubers upon contact!
Why similar: Strategy 30.4%, Physics 17.2%, Puzzle 15.2%, Casual 14.8%, Cute 9%
- #27 Buba Stacker
78% matchNo user reviews
Dev: Francis Bean
Windows
Buba Stacker is a physics-based sandbox and puzzle game where you can create simple constructions or complex contraptions using everyday objects. Create, play, or tell stories in the world of Buba Stacker, inhabited by curious Pipis and the titular Buba.
Why similar: Physics 30%, Sandbox 19.4%, Hand-drawn 13.7%, Cute 8.8%, Puzzle 8.7%
- #28 Oh Balls Merge
76% match8 user reviews100% of 9 reviews2025
Dev: Harrison Digital
Windows
Drop, merge, and score! Immerse yourself in the addictive ball-merging mania of Oh Balls and see how high you can go.
Why similar: Physics 30.6%, Casual 21.2%, Puzzle 13.3%, Family Friendly 11.4%, Logic 11.3%
- #29 Lack of Water
78% match2 user reviews50% of 2 reviews2021
Dev: DIG Games
Windows
Lack of water is a puzzle game. You need to direct the flow of water towards an empty glass.
Why similar: Strategy 31.8%, Casual 23.4%, Physics 21.5%, Puzzle 13%, Cute 8.8%
- #30 AshBall
77% matchNo user reviews
Dev: Kyaoo
Windows
Outrun the lava. Trust your teammate. One ball, one chance — pass or perish in AshBall’s minimalist, deadly arenas. Climb the leaderboard together and prove you're the ultimate duo.
Why similar: Physics 30.5%, Strategy 23.1%, Action 14.3%, Arcade 12.5%, Online Co-Op 6.2%
- #31 My Suika – Kyo’s Fruit Merge
73% matchVery Positive93% of 1,940 reviews2023
Dev: Watashi Games
Windows
Median: 3.6 hrsMean: 8.1 hrs≥1hr: 83%
A fun watermelon merge puzzle game! Combine various matching fruits to help Kyo gather watermelons in four different game modes!
Why similar: Physics 24.3%, Strategy 21.5%, Casual 17.7%, Puzzle 11.4%, Family Friendly 7.7%
- #32 Blobble Wars 2
76% match4 user reviews100% of 4 reviews2022
Dev: Tusk and Paw Games
Windows
Mouse-based physics strategy game. Take the other team's towers before they can take yours! Features 50 unique levels and four difficulty modes.
Why similar: Strategy 32.4%, Casual 23.3%, Physics 19.3%, Arcade 19.1%, 2D 5.7%
- #33 Landon's Puzzle ParTAY
73% match8 user reviews89% of 9 reviews2025
Dev: Adventure Camp GamesPub: Adventure Camp
Windows · Mac
Landon's Puzzle ParTAY™ is a game where you complete puzzles as fast as you can without running out of time! Enjoy all of the fun and wacky minigames with a C.I. Puppet Friends™ flair! Create your own profile and compete for the high score!
Why similar: Strategy 26.8%, Casual 18.8%, Arcade 16.3%, Puzzle 10.4%, Hand-drawn 7.9%
- #34 Petri Panic
72% matchPositive100% of 11 reviews2026
Dev: Chaotic Compy Studios
Windows · Linux
Stack and merge wriggling bacteria up to the dreaded SUPERBUG in a physics-driven petri-dish puzzler — race the contamination timer across Classic, Survival, and chaos-fueled Arcade modes.
Why similar: Arcade 20.8%, Casual 19.3%, Physics 18.1%, Puzzle 16.5%, Family Friendly 8.8%
- #35 Space Mouse 2
74% matchPositive100% of 17 reviews2020
Dev: Mindware
Windows
In 1981, Geimu Kyoujin's masterpiece "Space Mouse" was released. 39 years later, a sequel has arrived. In "Space Mouse 2", you'll enter a perilous underground labyrinth. This is a roguelike dot-eater designed to appeal to players of all skill levels.
Why similar: Strategy 37.5%, Casual 24.5%, Action 23%, Arcade 15%
- #36 TransPlan
74% matchVery Positive92% of 278 reviews2015
Dev: Kittehface Software
Windows · Mac · Linux
Median: 2.9 hrsMean: 3.3 hrs≥1hr: 86%
Deliver a payload from point A to point B with only a few simple tools and the laws of physics. Create ramps and catapults, watch objects tumble and fall, and someway... somehow reach the destination. Each project is a hand-drawn puzzle for you to interact with -- Devise a plan, experiment, and make it happen!
Why similar: Physics 33%, Puzzle 24.3%, Strategy 21%, Casual 18.5%, Indie 3.3%
- #37 Trap Them - Sniper Edition
75% matchMixed55% of 43 reviews2015
Dev: Juri Schupilo
Windows
Median: 4.0 hrsMean: 4.5 hrs≥1hr: 98%
In this puzzle shooter you take the role of a sniper. Collect all the crystals without getting caught by the RoboTTech robots. Be smart about shooting down the environment to shape it to your needs and guide the crystal collector safely through the caves.
Why similar: Strategy 27.4%, Action 17.2%, Casual 16.8%, Puzzle 11.3%, Sandbox 11.2%
- #38 Roll: A Puzzle Contraption
75% matchNo user reviews
Dev: Haren Derv
Windows
Roll is a creative puzzle game where you build contraptions out of stickers to roll, fling, and guide a hamster to its goal. Collect stickers as you complete puzzles, then build your own wacky contraptions for Hammy.
Why similar: Strategy 26.1%, Casual 18.3%, Physics 16.7%, Puzzle 10.9%, Family Friendly 7.8%
- #39 Fridge
70% matchPositive100% of 21 reviews2025
Dev: Lorcan
Windows · Mac · Linux
How many fridges can you stack before it all comes crashing down? Test your balance and nerves in this quirky highscore chaser where the only way is up... one fridge at a time.
Why similar: Strategy 28.5%, Casual 19.8%, Physics 19.5%, Arcade 16.6%, Logic 6.1%
- #40 Super Hot Potato
72% matchPositive100% of 10 reviews2021
Dev: Paul Connor
Windows
Rescue stranded potatoes, avoid deadly snails, slugs and spades, and clear 40 increasingly challenging levels in this fast-paced retro-inspired arcade puzzle adventure.
Why similar: Strategy 25.3%, Action 17.4%, Casual 17%, Arcade 15.6%, Puzzle 9.7%
- #41 Cat & Farm Pals
68% matchVery Positive95% of 284 reviews2025
Dev: Teneke Kafalar Spotlight
Windows
Cat & Farm Pals is a simple and fun pull & throw game that you can enjoy playing at your own pace. Spend fun moments with cats and farm animals, compete in weekly tournaments, and collect trophies!" 😸🐮
Why similar: Physics 26.1%, Strategy 17.6%, Casual 13.5%, Puzzle 10.9%, Family Friendly 9.7%
- #42 Merri Puzzle
73% matchMostly Negative26% of 50 reviews2017
Dev: Merriman GamesPub: SA Industry
Windows
Median: 0 minMean: 14.6 hrs≥1hr: 29%
Merri Puzzle is a physics based puzzle solving game, with a unique look and feel to it. The goal is simple, getting an object, often a ball to the end of a maze.
Why similar: Strategy 36.1%, Physics 30.8%, Puzzle 14.4%, Casual 13.3%, Indie 5.4%
- #43 The Hardest Thing Ever
71% match1 user reviews0% of 1 reviews2020
Dev: ChillFun
Windows
The Hardest Thing Ever is a first-person game where you will solve puzzles with physics
Why similar: Strategy 27.3%, Sandbox 17.1%, Casual 15.3%, Arcade 14.4%, Physics 8.9%
- #44 Bubble UP!
71% matchNo user reviews
Dev: Sub Pixel Luck
Windows · Mac · Linux
Match, pop, and combo your way to the top in this fast-paced, Tetris-inspired bubble shooter! Create explosive chain reactions to rack up points, unlock unique power-ups, and "Bubble UP!" through increasingly challenging levels in a vibrant arcade experience!
Why similar: Strategy 21.2%, Arcade 16.9%, Casual 14.4%, Puzzle 12.1%, Action 11.9%
- #45 Drawz
71% match8 user reviews38% of 8 reviews2019
Dev: Cheezy Freak
Windows
As a digitalized version of the chalk and black chalkboard that we knew from our old school years, Drawz is an oldskool puzzle game with 45 levels!
Why similar: Physics 34.9%, Casual 26.8%, Arcade 18.7%, Puzzle 14.1%, Indie 5.4%
- #46 Ghost Golfing
70% matchNo user reviews2026
Dev: Sleepy K Team
Windows
Swing on to Ghost Golfing. Build haunting mini golf courses to ricochet, blow, burn or teleport the ball right in to the hole!
Why similar: Mini Golf 26.8% ★, Casual 20%, Puzzle 12.4%, Strategy 9.3%, Logic 9.2%
- #47 Stretchy-Man: The Video Game
69% match4 user reviews100% of 4 reviews2022
Dev: JaxGames
Windows · Mac
Stretchy-Man is a physics based puzzle game. Earths mightiest super hero Super-Duper-Man has been captured by the villain Evil-Man, leaving it up to the unlikely hero Stretchy-Man to save the world from destruction. Will you be able to stop Evil-Man before its too late?
Why similar: Strategy 25.2%, Action 17%, Casual 16.7%, Arcade 14.9%, Physics 9.3%
- #48 Face to Face
67% matchPositive94% of 18 reviews2025
Dev: Samuel Leigh
Windows · Mac
😘A satisfying action puzzle game that merges the physics of Suika Game with a SUPER COOL set-matching mechanic.😄
Why similar: Physics 27.5%, Arcade 15.6%, Logic 12.1%, Puzzle 11.7%, Cute 8.2%
- #49 The Food Run
70% matchMixed71% of 14 reviews2016
Dev: Battenberg Software
Windows · Mac · Linux
Median: 3.0 hrsMean: 3.4 hrs≥1hr: 77%
The Food Run is a colourful, classic puzzle game with a few tasty twists. The aim is simple - just eat everything you can see on the screen! Enjoy 64 unique puzzles across eight themes. Can you get three stars on them all?!
Why similar: Strategy 33%, Casual 23.8%, Action 20.3%, Arcade 11.6%, Colorful 6.7%
- #50 BoomCrash
69% matchMixed55% of 20 reviews2022
Dev: Enoops
Windows
BoomCrash is a small physics-based game aimed at destroying buildings and other architectural structures using explosives.
Why similar: Casual 26.8%, Physics 24%, Arcade 23.3%, Puzzle 14.7%, Colorful 9.4%
- #51 Kollidoskop!
69% matchNo user reviews
Dev: Interrit
Windows
While the Space Race is winding down, the Ministry of Education of USSR aims to bring particle physics to the masses by commissioning a video arcade game. 40 years later you finally get to play it.
Why similar: Strategy 28%, Casual 27.8%, Action 25.3%, Arcade 13.6%, Indie 5.3%
- #52 Crazy Machines 3
66% matchVery Positive94% of 10,106 reviews2016
Dev: Fakt SoftwarePub: Daedalic Entertainment
Windows
Median: 3.3 hrsMean: 11.5 hrs≥1hr: 82%
Crazy Machines 3 is the latest, greatest, most amazing and craziest part of the series and fascinates once more with physic-based puzzles. Build your own crazy machines and share your awesomeness across the world thanks to the Steam® Workshop.
Why similar: Physics 39.5%, Strategy 24.7%, Puzzle 16.5%, Sandbox 15.4%, Casual 4%
- #53 Slaughter Cannon
68% matchPositive77% of 26 reviews2022
Dev: EnoopsPub: Enoops
Windows
Slaughter Cannon is an addictive physics puzzle game with exciting and challenging levels of varying difficulty.
Why similar: Casual 24.1%, Arcade 21.1%, Physics 19.7%, Puzzle 13.7%, Logic 10.8%
- #54 Suika Puffworks
66% match3 user reviews33% of 3 reviews2025
Dev: Michael Richard Lannon
Windows
Relax to the comfy and cozy atmosphere and master the games Physics to strategically match items until you make a nuclear ball without running out of space in this new hit action puzzle game! How many nuclear balls can you merge?
Why similar: Arcade 17.9%, Physics 15.6%, Casual 15.4%, Action 12.3%, Family Friendly 7.4%
- #55 BR Logic Pack
68% matchMixed57% of 14 reviews2018
Dev: Benarom Games
Windows
Game bundle with 10 logical / puzzle games. Something for those who like pipes, mazes, tiles, math games, falling blocks, match3, dungeons, pixels and challenges. Ambient games, without tons of distractions. Focused on random levels.
Why similar: Strategy 36.6%, Casual 24.7%, Action 22.4%, Puzzle 11.6%, Indie 4.7%
- #56 Chemical Chimpet
67% matchNo user reviews
Dev: Ian Mazgelis
Windows
Interact with Reaction Stones that combine with one another to form molecules, break down adjacent stones, and chain reactions together to crush molecules without lifting a finger. The stones rotate and translate along the board, leaving it up to the player to take a simple or complicated approach.
Why similar: Strategy 44.5%, Casual 29.1%, Arcade 15.1%, Puzzle 11.3%
- #57 The Fruit Game
67% matchNo user reviews
Dev: Veras Studios
Windows · Linux
A casual cute game about merging fruits and getting the highest score! You can also care and level up pets and in return they'll power up your runs! You can buy fruit skins, music, and backgrounds to customize your experience.
Why similar: Physics 23.7%, Strategy 17.8%, Casual 11.8%, Logic 10.1%, Puzzle 9.9%