Motocross Championship
From Sega Retro
There was a PC version built originally for internal development, not for sale (though there was one made later for Corel). It let us put in graphics and test gameplay on development PCs without having to rely on the one working Sega 32X hardware prototype (we had two, each the size of a mini bar fridge, one was damaged in shipping from Japan).
By the way, there's more about the development in Retro Gamer magazine in an article about the Sega 32X, "Load 133" edition (September 2014). See the related interview answers at http://web.ncf.ca/au829/Motocross32XInterview.html
- Alexander G. M. Smith (one of the programmers)