Valve Software, the folk that brought us the Half-Life family of games, has something new and (from my experience) pretty different out. It’s a game called Portal, and it’s unique in that it’s a first person shooter type of game, from the perspective of the player and the controls, but it’s purely a puzzle game. You don’t shoot anything (so far anyway, I haven’t finished it yet), but you do use “portals” to maneuver through test chambers and make things happen. So far, it’s been quite fun, rather addicting, and challenging too. Half-Life is great, Half-Life 2 is awesome and truly groundbreaking, portal is ingenious and fun, I recommend checking it out!