High Quality Content by WIKIPEDIA articles! Avalanche Press is an American company that publishes board wargames and has published some role-playing game supplements. An extremely prolific company, they have produced many respected contributions to the wargame community, most notably The Great War at Sea and Panzer Grenadier series, as well as Red Parachutes, one of their earliest games and a detailed study of the Soviet crossing of the Dnepr River in 1943.