Operation: Harsh Doorstop is the ultimate, free to play, tactical shooter sandbox. Play singleplayer, multiplayer, or co-op modes and explore thousands of community-created maps, weapons, and vehicles via the Steam Workshop. Created by developers of the cancelled Project Reality 2 project.
It’s 1968 in Vietnam, the time to “Make War Not Love”. Side with the Viet Cong or U.S. Army in this intense, fast-paced FPS set in the Vietnam War — now with co-op zombie mode. Choose from 300+ weapons of destruction. Kill or be killed!