It does not use ROM cartridges, instead used removable printed circuit board cards that connected different logic and signal generators in the console to produce the chosen game. A total of 27 games were available, on 12 different cards.
Sales were hurt by the misconception that the console would only work with Magnavox televisions. Magnavox later sued various game console manufacturers for patent infringement.
The original Odyssey was discontinued in 1975, but Magnavox released other consoles that did not use cartridges or cards under the Odyssey name, before introducing the Odyssey² (known in the UK as the Philips Videopac) in 1978.
Sources / Resources
Warning: A non-numeric value encountered in /home/obsolete/public_html/wp-includes/SimplePie/Parse/Date.php on line 694