Opposing Force Coop Addon - Nuclear Winter

This mappack "Nuclear Winter" is an Opposing Force mod by Mr. White, which story takes place at North America year 2017 A.D. 8-9 players can now experience new scripted scenes, models, artwork, character voices, sound effects and music with other players.
Requirements ---------------- Half-Life, Half-Life: Opposing Force and Half-Life: Opposing Force Coop on either WON or Steam is required to play. You must also either have an LAN or internet connection. How to install ---------------- Star