It was promoted based on the quantity of games included, all of which were programmed in BASIC and were of poor quality.
In an interview, Matthew Lewis, the author of Galaxy Defence, said he wrote the game when he was 14 and submitted it in response to a small, anonymous ad in a local newspaper.
Galaxy Defence took 12 hours to code and the graphics were done by his father, Ernest Lewis.
Others like Lunar Lander were ports or clones of very early or popular games, while others were sourced from independent developers.
Star Trek is shown in the cassette booklet as Startrek and Jet Mobile as Jetmobile.