All four games have excellent graphics and texture mapping when using a 3D accelerated video card. Everything is quite smooth and even in the maximum resolution possible, all of the games in the
Road Thrills pack were nearly flawless with the exception of the
Harley-Davidson game, where there was a slight frame-rate slippage every once in a while (but nothing extreme).
The sound quality of each of the games varied, but for the most part, all were pretty good. I especially enjoyed the crunching of cars and revving of engines in Dirt Track Racing.