(not all of these are bad. personally, banjo-kazooie non-voice-acting is a great alternative to dead silence, if you can't afford voice talent)

traditional bingo has 15 per column, so 75 total. theoretically that's “plenty” - if you bleed columns, you don't need as many. if you have very few players, you can arguably get away with just 24? with exactly one player you definitely only need 24.

we're up to 21.