How many universes competed in the Tournament of Power in Dragon Ball Super?

How to get close to this number

The trap is the size of the multiverse. The story establishes twelve universes, and twelve reads as a complete set, so most people assume every one of them was thrown into the ring. The rules of the tournament say otherwise: whether a universe had to fight depended on how well it was doing, and only the weaker ones were made to compete. Start from the full twelve and ask how many would be spared.

The exemption rule is what gives the number its meaning. The universes with the highest mortal levels, the story's measure of how well their inhabitants are faring, were excused and attended only as observers. The four that sat out are the ones the gods judged to be thriving; the eight that fought were the ones considered expendable, which is why the stakes in the explanation fall on them alone.

The practical consequence for the story is the scale problem: dozens of characters fielded across a single arc. A tournament with eight teams is a casting and animation challenge as much as a narrative one, and it produced the largest-scale battle sequence in the franchise. Counting the teams that fought rather than the universes that exist is the distinction this question turns on.