Pentavision made an official DJ Max arcade machine, but DJ Max Technika is quite different from the PC and PSP titles. Instead of falling notes, players tap the screen to hit and hold beats.
Mozarc: Fall in Melody, seen in an arcade in China, is like a cousin of DJ Max. Notes fall from the top of the screen to the bottom where there are plastic keys to press.
It’s hard to tell from that photo, but Mozarc: Fall in Melody is a fairly long arcade machine. See?
Just like DJ Max you have to hit the notes as they touch the black bar by pressing the right key. When I played my first song I was surprised at how flimsy the keys felt. They aren’t synthesizer-ish, they keys in Mozarc are cut from one giant sheet of plastic on top of the screen. Developer HypaaStudio created cards for Mozarc to save your progress too.
Here’s a video of someone way more skilled playing Mozarc: Fall in Melody than me.