Firetrack, released on a compilation by Superior Software, exploits a division in the way the Electron handles its display of the seven available graphics modes, two are configured so that the final two of every ten scanlines are blank and are not based on the contents of RAM.
The game Firetrack, found on a compilation by Superior Software, utilizes a flaw in the way the Electron handles its display of seven graphics modes. Two of these modes have their last two lines blanked out and don't rely on data from RAM.