Mari0 is described as 'Two genre defining games from completely different eras: Nintendo's Super Mario Bros. and Valve's Portal. These two games managed to give Platformers and First-Person Puzzle Games a solid place in the video game world' and is a popular Platform Game in the games category. There are more than 25 games similar to Mari0 for a variety of platforms, including Windows, Linux, Mac, Android and iPhone apps. The best Mari0 alternative is Portal. It's not free, so if you're looking for a free alternative, you could try Super Phantom Cat or GlPortal. Other Mari0 like games are Super Meat Boy, Toki Tori, DDNet and Mario Forever.
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.
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.
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.
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.
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!
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.
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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Mari0 involves the portal gun from Portal so it is a perfect match!