Kirby: Planet Robobot
Needs replacement with EX levels for each world, the unique Kirby 3D Rumble mode and Team Kirby Clash mode.
Kirby Planet Robobot is second Kirby game on 3DS. The main gimmicks here are the foreground and background as layers (you regularly hop back and forth between them), as well as the collectable Code Cube. You'll need to collect a minimum number to unlock the world's boss, and all of them in the main level to unlock bonus levels, but collecting all of them isn't very rewarding.