This version of NASCAR 99 is tailored for the American audience, likely featuring American drivers, sponsors, and possibly some adjustments in terms of gameplay or track selection. While the core gameplay is expected to be similar to the European version, regional differences might exist.  It would have delivered a simulation-style racing experience, focusing on the specifics of NASCAR. The developer and publisher information is missing in this context.

NASCAR 99 (USA)

Namco Museum 64 (USA)