It'd be kind of simple and you're pretty spot on Zeo. Kinetics basically had people with wheel on their hands or feet or both racing, ramming or hitting each other, sometimes standing, other times on all fours, doing tricks on ground or in air to build boost. The wheels could give them mobility in PASBR, ground or air tricks could be attacks, maybe a boosting super like FP level 1, a cinematic Captain Falcon ish level 3, and Rams or shoulder charges. I also believe there were arcade racer-esque
Those games are from the ps1 era I believe and probably ( I don't really know) don't have a huge fan base, Kinetica doesn't have a huge fan base but I would say many still remember it as a pretty cool game that deserves a sequel.
It was one of the first few games on the PS2 and though it didn't stick quite as well, I think it was an ok game and I have found memories of it. If it had been made for the PS3, and had online play, I think it would've had a better chance.