Best non-popular games?

I quite enjoy JEWEL MASTER. The graphics are pretty crap and you walk to slow until you get the speed ring or whatever it is but i really like playing it.

Flashback is an absolute masterpiece.

The genesis version was a bit odd though. The Sega CD version is the best console version i've played.
I really liked Mutant league Hockey, i could play that for hours. And Jurassic park Rampage was a cool game to me.