W?D: working slot machine PF reels; gamble points on roulette.

Disagree on W?D--the option to double your points or lose all of them via an interactive and functional roulette wheel on the DMD meets the definition of a novelty pin, in my book anyway.

Similarly, so would a game like CP IMO (boxer bashing, jumping rope, etc.).

Anyway, since there's no Pinball rule-book, I suppose it ultimately comes down to how one subjectively interprets the definition of novelty.

FWIW, here's how Merriam-Websters defines it:

"Full Definition of NOVELTY

1: something new or unusual

2: the quality or state of being novel : newness

3: a small manufactured article intended mainly for personal or household adornment —usually used in plural

4: something (as a song or food item) that provides often fleeting amusement and is often based on a theme —often used attributively "