I've had this program for a wile...and i think other people should start using it. Its a tool called Spirit of Half-Life and you can get it here It helps map making alot. Open GL is a nice thing to have for this tool. /if you dont have that...you see some strange things. But dont ask me what the strange things are. Download the tool and see for yourself.
id: Software RULZ!)
id: Software RULZ!)