The 25 in 1 unit from dreamGEAR was a plug and play unit that had 25 games that fit into the shooter, sports, puzzle, and action categories.
The 25 Games unit is a pirated version of the 25 in 1 unit.
There is a controller test screen that can be brought up on the unit.
What to doEdit
When powering up the unit, hold down the square and circle buttons and the controller test screen will appear.