Decals are rewards, similar to achievements, used to signify the number of StarCraft II games a player has won. They appear on and around buildings and on at least some units. Decals used with the protoss have a circle around them, and are player color. Decals used by the zerg are displayed on the creep surrounding a hatchery. As of Patch 3.7, worker units have the ability to spray decals on the battlefield. Each player can spray their decal up to five times.