From The TimeSplitters Wiki

Zones is a game where you and your team must take over the zones control it. There is no time delay for taking over a base, just walk over it and its your. There is only a red and blue team. The point of this game is to get the most points. Points will be determine by the amount of bases you control over a period of time. This mode works for alot of Maps. It also features in all the TS games.