- The Computron was a complex cathode ray tube while the Additron was a triode with multiple grids and targets.
- The Additron Tube design by Josef Kates gated electron beams of a fixed trajectory with several control grids which either passed or blocked a current.
- After filing for a patent for the additron tube, Rogers Majestic pushed Kates to create a device to showcase the tube to potential buyers.
- The Additron neither went into production at the Canadian Rogers Vacuum Tube Company, where the prototypes were built, nor was it used in the UTEC machine.
- Kates built the game to showcase his additron tube, a miniature version of the vacuum tube, though the transistor overtook it in computer development shortly thereafter.
- The additron-based computer, labeled as " Bertie the Brain " and subtitled " The Electronic Wonder by Rogers Majestic ", was a success at the two-week exhibition, with attendees lining up to play it.
- Patent issues prevented the additron tube from being used in computers besides " Bertie " before it was no longer useful . " Bertie the Brain " is a candidate for the first video game, as it was potentially the first computer game to have any sort of visual display of the game.