Features:
Non-Euclidean geometry, because you asked for it.
Gravity is a suggestion, not a rule.
Time is relative, but your wallet is not.
Warning: Do not attempt to draw the ceiling, trust us on this.
Sub-features:
Room 4, Wall 2: Where gravity is optional
Room 4, Wall 3: Because 4 is a prime number
Room 4, Wall 4: For advanced practitioners of non-Euclidean geometry