The pack XBOP4 is a level pack developed by XNDUIW. The pack has 20 levels.
Level List[]
- Earthquake Boundary
- Off The Grid
- Nothing Worthless
- Assault Rifles
- Heartbeat
- Xenoconversion
- Chromosomal Defects
- Hazardous Substances
- The Thieves
- Cryptology
- Anaphylaxis
- Resizable
- Rubberoid
- Polyrubber
- Amphetamine
- Sawblade
- Bad Man
- Square Root
- Square Root V2
- Sociopathic Mania