Weren’t there P+ and TPiR games planned that were canceled by the video game crash of ‘83?
There were. Those and the other five 2600 games mentioned in the OP were to be published by The Great Game Company (GGC), who was also planning Intellivision (and apparently Colecovision) versions of the set as well. The plan was to start releasing them (specifically the 2600 versions) in Spring 1983, following a demonstration of the first two carts (one of which was
Feud) at the New York City Toy Fair that March, but later delayed their intended release to late '83.
GGC ended up not releasing anything, though parent company IJE retained the rights and later sublicensed them to Sharedata for home computers. The success of said games prompted IJE to try publishing game show titles for consoles again, so they revived GGC and renamed it GameTek.
