[quote name='kaypatch']Hands down, Guardian Heroes.
We used to place bets on who would win when we did a Battle Royal! What a great game![/QUOTE]
Definitely Guardian Heroes for me too. Then again, a fair number of the Saturn games I own are mediocre, and I've never played some of the great ones: Dragon Force, Panzer Dragoon Saga, Shining Force 3, Albert Odyssey, etc. But Guardian Heroes was a stellar game, and the multiple paths through the game ensured I played it over and over.
[quote name='Halo05']A close second is Firepro Wrestling S - Six Man Scramble. Firepro S was actually my first import game and the title (and it's internet-saavy fanbase) is what prompted me to mod my formerly neglected Saturn.[/QUOTE]
That was my first import game, too, and it was well worth the cost of the game and the Action Replay cartridge.
Reading this thread makes me really wish that Saturn games would come out for Virtual Console or XBLA or Game Room.