Sorry I can't provide any more info on the cartridges - I'm afraid I have no recollection of the details.
On another note, I did another dive into the basement and found:
An original copy of Your Friend, the Exec (Edition 2.0 1981 June 22)
A marketing photo for Tower of Doom (when it was published by Intv)
A folder of my design notes and graphics sketches from Loco-Motion
My copy of the famous Mattel Incentive plan memo
My termination notice 1/20/84
PM sent regarding an interview for the podcast...