It featured fourteen new weapons and a new item, all of which were later integrated into the main mod. In 2012, an expansion pack was released, entitled Reinforcements from Moldova. Players can also choose to play as one of three characters, who differ in their appearance, starting weapons, and special combo attacks.
In order to rectify the sheer imbalance of gameplay brought about by the weapons, the mod also defines a new set of skill levels, that primarily affect monster health. The mod replaces the player's arsenal with a wide variety of ludicrously powerful weapons, ranging from automatic shotguns with ten barrels to dark matter cannons. As of 29 June, 2015, the current version is 2.4. Russian Overkill is a gameplay mod for ZDoom, created by Pillowblaster in 2011.