Download & installDownload and install locally. No server needed.
OpenTTD is an open source simulation game based upon Transport Tycoon Deluxe
GamesOpen-source remakeStrategy
From the README
OpenTTD is a transport simulation game based upon the popular game Transport Tycoon Deluxe, written by Chris Sawyer. It attempts to mimic the original game as closely as possible while extending it with new features.
Open Source real-time strategy game engine for early Westwood games such as Command & Conquer: Red Alert written in C# using SDL and OpenGL. Runs on Windows, Linux, *BSD and Mac OS X.