Actually, I've had a video game idea for quite some time that might work - basically, a game revolving around the concept of a Blade Dancer. Someone lithe and supple who fights with a blade as if they were dancing with it, slicing and dicing apart any opponent with a multitude of quick strikes - contrary to the popular overmuscled fighter who kills with a handful of powerful blows. It builds on the concept that all dance stems from five main sources: mating rituals, religious rituals, agricultural rituals, theater/performing arts, and martial arts.
Now, true, it wouldn't be a fully trance-themed ST, because at least a few areas ingame would be old-fashioned and would therefore need more old-fashioned music. But I could see the majority of it easily being done in trance.
EDIT: That's just one example of a game I could think of that could work with mostly trance. But I'm sure there are others you can think of.