About my 40-31:
40. Monkey Island 2: LeChuck's Revenge (PC)
Not my favorite Monkey Island and I feel it's overrated, but I do love the 90's Lucas adventures.
39. Rogue Trooper (PC)
While I had read some of the comic, I'd never heard of the game when I happened to pick it up and was surprised they'd make one of such obscure title. It's a good shooter because you can play in many ways: sniper, stealth, go Rambo, use mines and other tricks. But especially it is great example about how to use a license, really makes most of the source material.
38. Ridge Racer Type 4 (PS1)
While there's much bad in the general system of grinding same tracks over and over, but the driving... that feeling of getting a drift just right...
37. Miracle Warriors: Seal of the Dark Lord (SMS)
Miracle Warriors is refreshing as JRPG because it's from the early days of the genre and thus does things differently than later more generic ones. And I like how there are several game changing points.
36. Carmageddon (PC)
Smashing and crashing and splashing, what could be more fun?
35. Defenders of Oasis (GG)
Lovely little JRPG, snack-size to play in a week instead of month. Some pretty unique details, like the Genie being your only character to use magic.
34. Mean Streets (PC)
First of Tex Murphy scifi detective games, adventure game with also simple shooter and flight sim parts. Incredible sound system for PC without sound card and genius keyboard controls to replace the lack of mouse support.
33. S.T.A.L.K.E.R.: Shadow of Chernobyl (PC)
FPS games tend to be gray and brown (plus little red). Mix that with Soviet scifi full of Slavic melancholy and you have the most atmospheric gray rain ever.
32. Book of Unwritten Tales (PC)
A modern tribute to Lucas adventures - you'll want to play MI2 before this. Kind of Discworld-ish RPG/fantasy parody with one very special playable character...
31. Phantasy Star Gaiden (GG)
I do love the old Phantasy Star series and Gaiden is the fifth, Japan-only game of the series if something is to be included besides the four numbered ones. It may be small and simple, but the charm is there.