Red World is a 1.8/2.1 Extreme Demon collaboration created by saRy and Neptune and hack-verified and published by saRy. The level became impossible after the 1.9 update due to a block at 2% which was changed into a decoration. The The level cannot be copied.
The level contains 11,090 objects.
The level is 1m 20s in length.
It used to be the second hardest level in 1.8 until it became impossible (behind Silent clubstep).
This level is technically the oldest Extreme Demon.