Ok, I see, it’s a new interface and the setup may have something different to the original toastrack, as the game has been tested in real and emulated 128K hardware without problems. How are you loading the game? Any other interface? Redshift uses the double screen buffer present in 128K models, I wonder how this is implemented in the interface, because a problem with this feature can cause problems when presenting the screen… Unfortunately I dont’ have the interface to test. Who did design the interface? (I read “Tyrell” and even “Velesoft” but Velesoft’ page is down…) My other games like Thieves School and Carlos Michelis also rely in the double screen buffer, have you load them? (demos available)