is a 8-10 man roster allowed?

we've seen teams in asia have 6 man teams, but I just wanted to ask what is the limit of players in a team.

I think as long as the same 3 players play each game?

Space 🌌 is the limit.
until unless 5 of them play out of registered 6 players in official tournaments

It’s 7, from official rulebook

8 players are allowed at max