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 reality arena. It consists of two bases either side of a central area. The middle room features a series of walls and other box-like objects which can be used for cover, as well as a balcony level at one end. When playing the level on the Zones game mode, there is a second area between the two team bases, directly beneath the main central area, but on all other game modes this section is blocked off, save for a small segment at one end which can be used as a shortcut between the bases.

The assault map VR is similar in name only, as the layout is completely different. The level is considerably larger and laid out specifically in relation to the assault objectives.