Summary: I've played the PC version using the Steam game engine. I'll have to say the navigation and controls are more fluid with the mouse on the PC version, but it's still an awesome game on the Xbox. I love Portal because it makes you think before you play.
Summary: Portal has won many awards since its launch in 2007, and when you play it, you'll agree that it deserves them. It's ingenious and compelling, a masterpiece easily at home in an all-time greatest games hall of fame list.
Summary: The stand-alone arcade version of Portal is a terrific little game and well worth the modest cost. If you've got the Orange Box retail game, skip this. But if not, or if you absolutely LOVED it in OB and want to get the extra challenges, go for it.
Summary: I'm mostly posting this to respond to Perse Pappa's comment. This game was originally released as part of The Orange Box, next to Half-Life 2 and Team Fortress 2, although this is much added content that was not included with that release. It is a game deserving of a full release in and of itself.
Summary: To start off, and clear up some confusion surrounding Still Alive, I will state that the main game is exactly the same as the one included in The Orange Box. However, there are an additional 14 test chambers and new achievements that were not on the disc.
Summary: You can tell Perse Pappa's nipples lactate...and he hasn't played the game. This is essentially a greatest hits edition of the game...similar to Midnight Club 3's, God of War 2's, or even Lost Planet's...Is it worth 15$...unequivocally 'Yes'!
Summary: Perse Pappa, is it because PSN games are horrible? The fact that you say XBLA games aren't regular games means you shouldn't be PLAYING games.. Another fun thing to mention is that this was with The Orange Box, and I bet you praised it.