This powerup will give the user a shell on their back. Hiding in the shell is easy, but it won't help when attacked with projectiles. When at top speed, hop in the shell and let it do the running for you. Your sight is heavily affected, as you ARE spinning, it’s possible to jump in the shell, despite being very cramped. Probably not the blue shell you're thinking of.
New Super Mario Bros.
- Blue Shell
- Better Swimming (for some reason)
Sprite by Nintendo / Mario Multiverse