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.
In this guide you will find • installation instructions • control hints • a brief description of the background • Youtube links of all clips • the complete credits • a change list • some legal and licensing notes