Rat Race is a multiplayer map in Halo: Combat Evolved.
Layout[]
It is a sort of circular map, with a multitude of teleporters, tunnels and passages.
The most notable feature of the map is the central section of elevated tunnels. There are two entrances to this complex, one by a teleporter and one by an inclined ramp. The strategic value lies in the two exit points which allow a player to drop unexpectedly from the ceiling through a wide hole into the enemy section of the base.