From The TimeSplitters Wiki

VR
Size	Small (every mode except for Assault), or Large (only in Assault)
Location	Virtual Reality
Climate	Abstract
Unlockable	Unlocked by Default
Recommended Bots	Cyborg Chimp INSETICK SD/12 PROMETHEUS SK/8 INSETICK SK/10 R-110 GOLIATH SD/9 R One-Oh-Seven PROMETHEUS SD/7 SecuriDroid XP Med-Unit 6
Recommended Weapons	Dispersion Gun SBP500 Plasma Autorifle Sci-Fi Sniper ElectroTool Plasma Grenades

VR is a virtual map in which you play on. It consists of two bases and a middle room between them. The middle room features a series of walls which you can hide behind. There is also a long hallway that serves as a short cut between the two bases. In assault mode, the map is completely different and is very large is size. The VR map played on all other modes is a small section of the assault map.