music:
K-ON! Houkago Live! (in Japanese but playable with little to none Japanese)
Taiko no Tatsujin series (same as above)
Pop'n Music series (same as above)
DJ MAX series

RPG:
Star Ocean series
White Knight Chronicles: Origins
Shin Megami Tensei: Persona
Lunar: Silver Star Harmony

Fighting:
BlazBlue series
Tekken series