There's an updated version up. The grey window is fixed.

I appreciate all your comments, I would especially like to know the following:

1. Are you satisfied with the framerate? If not, what's your system's specs?

2. Did you manage to finish the race and have your name in 'Hall of Fame'?

3. What's the least appealing visual element that you see in the game?

4. Do you think it's better to distribute a Trial version that ends in X minutes (per game) or a Trial version with unlimited play that ends in 30 days?

Thank you all.