There are but literally nothing compared to the DC.
A good place to start would be Rockin-B's website at http://www.rockin-b.de/ - he's not only the most active SAT devver, he also provides a complete list of games, emus and demos at his website.
When it comes to reasons for buying a Saturn, there are plenty great games: I'd suggest Panzer Dragoon Zwei, Keijo Flying Squadron 2, Saturn Bomberman, Astal, Shinobi X, Dragon Force (PAL), Shining Force 3 Part 1, Gardian Heroes, Nights, Darius Gaiden - plus a trillion of SNK and Capcom games and Japanese Sh'mups.
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