Steam, Tracks, Trouble & Riddles (S.T.T.&R.) is a single player adventure mod, based on source engine (Orange Box) by Valve. It combines two types of game play: an adventure game with complex, 3D-interactive riddles in a fantastic environment and a simulator for track based vehicles.
This file contains the complete data of the mod. It is a renewed version of chapter one which was released in Septemper 2014. A lot of recommendations and suggestions coming from the community found their way into this new version. Bugs and inconveniences were removed. Extract it and place it in your sourcemod folder under your Steam installation. Then restart Steam. You will find the mod under S.T.T.& R. in your game list. Have more information in the release guide in this download section and have fun playing this mod.