This game currently has three prototype versions available:

August 22nd, 1994 prototype
This prototype contains the largest amount of differences, and features a early version of the highland course, where the trackside objects lack any details.


August 29th, 1994 prototype
How much work was done in a week? Not that much. This version contains a more complete version of highland, but it still has lots of differences when compared to the final version, among a lot of other stuff.


September 5th, 1994 prototype
This prototype has the least amount of differences, but there are still quite a few things that were changed for the final version.