1. Gameplay
No surprise. Is the game fun to play or not? The driving force behind most games.
2. Replayability
I want a game i can play over and over and get lots of memories from.
3. Presentation
Close between this and my #2. Some games are beautiful, some are gritty and real, some are amazingly styled. Can be very important to drawing you into the game.
4. Sound
I love music, what can i say.
5. Story
Should keep me interested, but i don't really play games for the story except for maybe Square Enix.
Love both JRPG and WRPG, but have to choose JRPG.
Currently own: PC (duh), SNES, Game Boy, Game Boy Color, Game Boy Advance, PS1, PS2, PS3, PSP.