Summary: Compared to Portal 2, this game is extremely short, easy (to figure out, but tedious to complete some levels) and just plain sort of boring. I found the voice of the computer in this first game to be very annoying. Portal 2, however, is awesome. I bought this after having played Portal 2 and wanting more levels but was disappointed.
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. This isn't the kind of game that you play for a few hours and then get bored. The challenges and difficulty escalate with each level.
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. Despite many recommendations from friends, I initially avoided getting this game for two reasons. Don't make this mistake! It's a fantastic game, and neither of my concerns proved to be important.
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. Such a simple concept gets used in so many different ways that the entire game.
Summary: Portal is still fantastic and the new Still Alive rooms are nice as well. However, me being a huge Valve fan is why I purchased this. While the Still Alive rooms are very good, they aren't worth 1200 msp if you have The Orange Box, which EVERYONE should own. If you're a huge fan of Portal, pick this up. If you haven't played Portal, buy it now. If you didn't really car e for Portal on The Orange Box, this won't change your mind.
Summary: Portal rocks. anyone having problems with not being able to load your saved portal game from the Orange Box? I'm having to redo the original portal puzzles before getting to the new puzzles b/c of this problem. BUT, portal is such a cool game that I don't really mind.
Summary: If you've already played this game in "The Orange Box", don't buy this game. It's the same game other than 14 easy challenge rooms. If you never bought "The Orange Box" and wondered about "Portal"... then buy "The Orange Box". You'll get 4 other amazing games for an extra $30. This is just a sad attempt to milk the money out of the "Portal" bandwagon. 1,200 Microsoft p oints for a game I already played, and some extra stuff that took me maybe 2 hours to complete.
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. The game is innovative and invigorating. It is nothing like the majority of XBLA g ames out there. Production quality is that of a full release game.
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. Given the length of time that The Orange Box has been out, I will not cover the main story/game of Portal but will instead focus on the new challenges.