If I have to choose only one game, and not a N3DS exclusive (cof cof Xenoblade Chronicles 3D cof cof), Resident Evil Revelations. Because it's that good.
But besides it, Kid Icarus: Uprising, Dead or Alive Dimensions, EX Troopers, Kingdom Hearts 3D, Monster Hunter and Super Smash Bros. are also very good examples.
But besides it, Kid Icarus: Uprising, Dead or Alive Dimensions, EX Troopers, Kingdom Hearts 3D, Monster Hunter and Super Smash Bros. are also very good examples.