Multi Theft Auto (MTA) is a multi-player modification for Rockstar North's Grand Theft Auto game series. It is the world's first modification to incorporate multi-player into a single-player PC game.

Originally founded back in early 2003 as an experimental piece of software, Multi Theft Auto has since grown into an advanced multiplayer platform for gamers and third-party developers.

Starting with MTA for Grand Theft Auto: San Andreas, you can play Grand Theft Auto on-line with your friends, in your own custom maps, your own server and much more!

But besides multiplayer functionality, Multi Theft Auto also has it's own in-game GUI including a console, server-browser, chat-box, nametags, and a lot more, that replaces the original game's interface, along with a complete map editor, built from scratch, that allows any user to create it's own custom maps using GTA's world objects.

While the current MTA:SA version only features a racing mode, the upcoming release will literally blow away all previous versions by introducing a list of awesome new features. But even today, the older versions of Multi Theft Auto are still played with rougly more than a thousand players playing on-line simultaneously.