Comments - salac_metalac

i have tf2,hl2 and it still needs engine source to play zombie panic dedicated server!!what to do with that??can anyone tell me?to start 2 games at once or what?

i have a problem with zombie panic!i installed team fortress 2,hl2 and when i start zombie panic dedicated server it tells me that the source engine must run so the mod can be played!how can i do that??