Dark Powers (DP) is a teamplay modification for Half-life 2 Deathmatch (HL2DM). DP adds a layer of strategic area control gameplay on top of the standard HL2DM team play. Spawn points are captured by overloading combine consoles with dark energy pellets AKA combine balls. Spawns can also have attached devices to help their teams, such as weapons and health dispensers.
DP allows mappers to specify a map name, version and their own steam community name, so that players can be sure of what version they are playing and who to thank for the map (or who to suggest changes to).