Bought it for Virtua Fighter which is by far the best game on it. The rest of the games are okay but can be emulated pretty easily, lots of weak throw away titles too.
It's too small for adult hands so you need to the controller, the cable is a bit short on that so you need an extension to sit comfortably and the D-Pad is just okay, nothing to write home about.
The biggest issue IMO is the input lag, you'll miss moves and die in games where you normally wouldn't if you were using real hardware or PC emulation.
An amazing mini arcade from sega,everything is top notch from the clicky stick and buttons to the beautiful screen in proper 4.3 ratio so games are scaled correct,a great value w 37 arcade titles