Save slots are like this:
SLOT 1 – NAME – 67.2 PERCENT DONE <—
SLOT 2 – NAME – 17.5 PERCENT DONE
NEW SLOT – NEW GAME?
The arrow is what you choose. It’s when multiple players want to play (only 1 person at a time though.), you have to have to save slots. That’s what save slots are. Here’s an example.
It would be very helpful to do with big games like you said, DIVISION.