well i just got a DSTT and have 2 gigs to fill up. so far i got:
Castlevania - Dawn of Sorrow
Castlevania - Portrait of Ruin
Megaman ZX
Megaman ZX Advent
Final Fantasy 3
Final Fantasy 12 Revenent Wings
Final Fantasy Fables - Chocobo Tales
Front Mission
Luminous Arc
Mario Kart
New super mario bros.
Mario 64ds
those are what i go so far.
waiting for firmware upgrade for layton/dungeon explorer
suggest some good titles please