A pistol fight inside an artificial cavern: walls, floor and ceiling are all cut from the same mottled brown rock, lit by fluorescent panels set straight into the stone. The arena drops in tiers — rock terraces and a deep trench across the middle — with arched recesses of reddish rock in the walls, rough rock ladders between levels and red graffiti on a few surfaces.

The cavern measures 2624 × 3648 × 1568 units and runs to 4,437 faces with only 9 textures, all embedded in the .bsp. 32 spawn points per side seat a crowd of 64 players. There are no hostages despite the cs_ name; instead 16 Kevlar vests lie on the floor for the taking, which files the map with the fight-yard kind. Buy zones are not marked, so the engine places them at the spawns, and a game_player_equip entity hands out the pistols.