Maze-A-Tron was for the Intellivision, so you'd need some kind of Intellivision emulator. I have several emulators but to be honest have never tried to find an Intellivision emulator. A quick Google search came up with several, but not having actually USED any of them I would be hesitant to point you to one.

Most emus need roms, and you're not legally entitled to own a rom unless you possess the original cart. So, most people will not help you find roms, or link to roms on message boards.

Good luck!