Sonic 2 Beta ROM vs. Final ROM - Hidden Palace Zone

The most interesting level to be cut from Sonic 2, despite its blandness, has a few interesting features.

Some people say this is the "Master Emerald", but it's actually just a smashable rock that blocks the pipe beneathe it.

Bat robot, hangs from the ceiling and swoops down when you approach.

Pipes.

Dinosaur robot, doesn't do much.