@joel Hmmm. Just depends on what experience you need to round it out.
Mario Pinball Land, GBA, is a nice mix of pick-up-and-play and progression play and adds a pinball vibe.
Bookworm (GBA version) is a great pickup game too.
Some version of Tetris or Panel de Pon would be a strong contender.
RPG, like Golden Sun.
Puzzler like Lost Vikings or Lemmings.
