There are many alternatives to Portal for Mac if you are looking for a replacement. The best free Mac alternative is Mari0, which is also Open Source. If that doesn't suit you, our users have ranked more than 10 alternatives to Portal and four of them are free and available for Mac so hopefully you can find a suitable replacement. Other interesting free Mac alternatives to Portal are GlPortal, Portile and ASCIIpOrtal.
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.
Portile is a 2d, tile-based take on Narbacular Drop (more than Portal, because momentum plays a big part in Portal, and it doesn’t play any part in this).
See high res text graphics. Master physics bending puzzles. Escape the test chambers. Play ASCIIpOrtal! The text-based game with a geometry breaking physics gun.
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Its basicly Mario and Portal combined.