Another update:

The game speed is slowed down a little bit but now gameplay should almost run at the same speed as the real calc because I added WAIT commands.

I also got rid of the msgbox at the end and just display a zoomed-in, shaky copy of the score. The msgbox kept crashing the emu. There is also an intro animation at the start but I would need critor to see if it runs fast enough on-calc.

Maybe you could contact Tim Wessman(and point him to the updated version) and let him know. Perhaps he can pass it on to the proper people. I saw in the Cemetech topic that your game was included. I was a bit surprised that they just tossed it in there(in the pdf). It is pretty neat that they did though.

Ok so some updates!

I managed to solve the issue with the intro transition only displaying partially or not at all and I also finally moved everything from G0 to G1, so that I can update the entire screen content at once via BLIT. The max speed dropped from the totally unplayable 60+ FPS to something slightly above 50 FPS, but there's less tearing and there's no more flicker.

The next step will be to attempt getting rid of the For loop used to generate the road every frame and instead shift the screen around and only redraw the missing part of the road. To avoid copying the entire screen content twice, I might make G1 a bit larger in width. However, I will most likely go back to not updating the entire screen at once because I currently redraw the entire HUD every frame, which isn't efficient. In the future, the score will be once again be displayed directly to G0.

Wow, that's awesome DJ!

Thanks, and I can't imagine what can be done with the new polygon feature now, especially that it has alpha transparency support.