Although the storyline has probably been ruined for the entire planet by now (it certainly was for me), Portal is a must-have. Amazing writing with hilarious delivery, and the puzzles cover some things that are overlooked in the sequel's puzzle mechanics (so many black panels in Portal 2!), presumably just to stop the formula from getting stale. Try for golds in the Least Steps and Time challenges and you'll find much more challenge in the first title, although you will end up playing the same level 10 times.
Last edited by Splenge; 04-24-2011 at 10:55 PM.