|The Enhanced Special Testing People|
|Website||Archived here. RandomSelect hosts their work at their own site.|
TESTP - short for The Enhanced Special Testing People - were a group private testers who developed content for private beta releases of the engine and timed their releases soon after the public updates of the engine. They were also one of the first that experimented with the capabilities of the engine via attempting to emulate characters from other fighting games, eventually leading to a Mugen used mostly to recreate other fighting games that is today.