His initial idea was to have the player control a robot with a spike on its head to pop bubbles—Mitsuji disliked it for not being "cool", instead preferring dinosaurs with ridges along their back.
Mitsuji's initial idea was to have a player control a robot with a spike on its head to pop bubbles, but he disliked it because it wasn't "cool" and preferred dinosaurs with ridges along their backs instead.