«Rook Advanced Source Engine» by «Vertical Vortex» is a modified «Source Engine» «by Valve Software». It's a closed-source engine, based on Source Engine code with animation system & weather system improvements with new gameplay elements added.
No members were found matching the criteria specified. We suggest you try the member list with no filter applied, to browse all available. Join now to share your own content, we welcome creators and consumers alike and look forward to your comments.