Rat Race

2-6 players

Summary
Rat Race is a multiplayer map in Halo: Combat Evolved. It is a 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 way of teleporter and one by way of 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. Since this is strictly a one-way vector of attack, and jumping down this hole usually entails grabbing an active camouflage or Overshield power-up, defenders are forced to keep an eye to the ceiling.

Although the Bungie.net description claims that it is a UNSC attempt to mine into the surface of a section of Halo Installation 04, the fact that they had only 2 or 3 days to set it up makes it difficult to confirm with known facts. Likewise, it is not known where they would have found the equipment necessary, or the time to do this.

Rat Race is similar to the Halo 3 map Rat's Nest in that it has a similar name, and both maps have a race track of sorts.

Trivia

 * The structure of the level resembles a parking lot's up and down ramps, careening off expressways.

Glitches
The main glitch in this particular level is dropping both the Overshield and Active Camouflage from below with a gunshot or explosion.