Games similar to Mari0 include Portal. It's paid, but GlPortal and DDNet are free. Other options are Super Meat Boy, Toki Tori, Super Phantom Cat and Mario Forever. Platform Games like Mari0 are a crowded field, with more than 25 alternatives for Windows, Linux, Mac, Android and iPhone.
Portal™ is a puzzle game from Valve. Set in the mysterious Aperture Science Laboratories, Portal has been called one of the most innovative games on the horizon and will offer gamers hours of unique gameplay.
United States
Super Meat Boy is a platform game developed by Team Meat and is the successor to Edmund McMillen's and Jonathan McEntee's flash game, Meat Boy, originally released on the Newgrounds website in October 2008.
Sweden
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The gameplay in Toki Tori is a blend of two genres. While it looks like a platform game, it’s a puzzle game by heart.
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Super Phantom Cat is a retro-inspired 2D platformer that pays homage to 8- and 16-bit classics games. In Super Phantom Cat, players take on the role of Chemist White and embark on an action-packed journey through the Phantom World.
United Kingdom
DDraceNetwork (DDNet) is an actively maintained version of DDRace, a Teeworlds modification with a unique cooperative gameplay. Help each other play through custom maps with up to 64 players.
If you remember the oldest of Mario games, you cannot just pass this title by! Mario Forever is a remake of the classic Super Mario Bros game, which will make you busy for long hours, even if you haven't played Mario before!
PolandEU
Super Mario: Blue Twilight DX is a non-profit unofficial fangame based on the Mario universe. It combines elements from 3D Mario titles with classic, 2D gameplay, set in Halloween-themed levels.
Toad Strikes Back is fan game based on classic Super Mario Bros. titles. It stars Toad from the Mario series.
Lep has to save his friends and family all alone. So help him to gain more powerful abilities to defeat the wizard. Jump and run through Lep's world and have fun with 64 awesome well-designed levels.
GermanyEU
spaceBOUND is a difficult puzzle-platformer game, in which players guide two astronauts through an abandoned mining facility.
Alex the Allegator is a series of games that I, Johan Peitz, usually use for game coding challenges like Speedhack and Ludumdare.
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