Territory Control is a gametype played only on the map Hydro.
The concept of the gametype is to control all the areas the enemy team owns and then your team wins the game.
Each game is randomly selected from the six available layouts in a 'point against point' game where both teams must capture the opposite point while defending their own. After a team successfully captures the opposite point, the next round takes place in a different area of the map which is also randomly selected. After a team captures all four territories, that team must capture the enemy team's base. If the base point is captured (in Hydro, the Radar Dish for RED, The Power plant for BLU), the attacking team wins the game. When the next round begins, territories are reset and a new random layout is selected.