My top 5 (in order of when I played them, I can't choose my actual top 5 in order of how I like them; there are too many types of different games)
1. Ocarina of Time (N64) ---------first video game I ever played (no wonder i love Zelda)
2. Pokemon Emerald (GBA) -----------my favorite Pokemon game
3. Hotel Dusk Room 215 (DS) <-----great puzzle/mystery game. Its that not popular even though its a great game.
4. Spiderman Web of Shadows (Wii) ------ fav Spiderman game
5. The Orange Box (Xbox360) ----- I know its 5 games in one but the Half-life/Portal series is AMAZING (Portal 2 should REALLY be on here too it would definitely be #6)