Puzzle Bobble 4X
Note: This game is also titled Bust-A-Move 4 .
Bonus world
At the title screen, press Triangle, Left, Right, Left, Triangle. If you entered the code correctly, you will hear a sound and a small face will appear at the bottom right portion of the screen.
The image featured at the top of this post is ©The Legend of Heroes: Trails of Cold Steel III key art / Original