The more the merrier! Fun for those involved, yes. Not so much if you stumble in uninvited to the fun and it’s your partner with 2 unknowns. That’s not fun.
The Number 3 can also be the letter M or the letter W if turned appropriately.
If you face two 3's together you get an 8.
The Number 3 can also be a pair of sideways breats or a bird flapping it's wings.
It can even be a butt if turned on it's side.
Then turn it 90degrees and you'll get an infinity, but if you take a half away(to get you 3s back) - and you get a zero.
So it looks like (3+3):2=0
Beware of keeping two 3's in one place they can collapse to a zero!