"Half-Life: Opposing Force Coop" allows you to experience the epic Opposing Force story and environment with your friends, or with players around the world. Half-Life and Half-Life: Opposing Force on either WON or Steam is required to play. You must also either have an LAN or internet connection.
best mod ever
better than sven coop
WOW! so great MOD for OP!!!
Мне понравилась графа !
Единственный удачный мод
Nice "mod" to play opposing force in coop with the original game. Works very well.
FUN!
FAKE SVEN COOP MY FAV
I WORK ALONE
._.
Boring as **** because it lags like hell and the other players can get in the way