Yeah ? Already wondered Disney would let those cabs run something buggy.
But I guess the hunt for those machines is on now 
The dead give-away is the stick/trackball combination, the core control system of nearly every modern FPS engine on the planet. The screen shot shows a radar view, what looks like player stats and a tank stat icon, none of which existed in the film or in any of the homebrews out there. If I recall from the film, the gameplay was somewhat "sticky" too, like playing Duke Nukem without the mouse. The gameplay in the videos from Comic-con plays too smoothly. Any of the modern FPS engines like Source, Quake or Unreal can be modified to look like this. Heck, Disney has more than a few in house engines they can re-appropriate for just such a purpose. Give it a few months, if Disney doesn't release the game, some mod team will make an announcement on one of the popular engines.
However, anyone notice the copyright notice?
C 198? Encom? It looks like 1985, but I think it's 1982. Hard to tell.