List of TSUG accessories

Since the inception of TSUG, loads and loads of accessories have been designed for the system. While a majority of these are manufactured by Theorysonic, lots of third-party manufacturers have developed accessories under Theorysonic's approval.

TheoryStick

 * Main Article: TheoryStick

The TheoryStick is an arcade stick developed by Drillimation Studios for TSUG-based machines, although it can run on Windows, Linux and Mac as well.

TS-UGOS RAM Expansion Module
The RAM Expansion Module is a RAM card that can be installed into a TSUG machine through one of its ports, and functions similarly to the RAM Expansion Pak on the Nintendo 64. This essentially adds extra RAM to the machine, and some games can run better with it. Some games require the module in order to run, such as EKBA 2000, as the game will freeze on the Namco logo if it's not installed, and Touhou 12: Undefined Fantastic Object by the same publisher, to fix a game-breaking bug that would cause the game to randomly crash after hitting 10 million points.