The RUIN game type (originally called raze, but changed because it was too similar to race) is an Alti+ game type where you must destroy all of the opposing infrastructure to win. The base Altitude mode for this game type is BALL, and so RUIN maps should start with ball_ruin_.

Since the base game mode is BALL, there can be multiple bases and turrets, all of which must be destroyed to win. There are two variants of this game type: team vs. team, and team vs. computer.

In this variant, each team should have an equal number of turrets and bases. If there are bases, the bomb spawning should also be identical. Since each team is competing for the same goal, it should be equal.

Maps work at any size in this game type, and vary based on how much interaction between opposing players is desired. Turrets are often hidden behind objects to complete the visuals for the map.

In this variant, all human players are assigned to one team and are working together (much like the COOP game type) to destroy all the map's structures as fast as possible. This variant is timed, like the COOP and RACE game types, and records are kept. One catch to this mode is that the Bots should be live, and they get a point for each human player they kill. So, unlike COOP, the computer can win!

Maps should not be too square with this game type, or Bots tend to wonder too much.