I suppose I could've made a shorter thread subject, but I didn't, because I'm evil.
Anyway, for me that game would be Big Red Racing. Such a fun wacky racing game. Me and a friend used to play the demo for hours just trying to make big jumps outside the track.
Actually I've spent more time playing the demo than the full game. Those were the days!
I'm afraid that if I were to ever try the game again, it wouldn't feel special and I'd just be like "That's all it was?" and all the good memories of it would be ruined.
Got any games like that, /vr/?