when you play mahjong (tradiional Chinese style) only a maximum of four people may play but if you aare playing matching mahjong then two may play.
Two players
four players
In all systums, you can play with up to 2 players
4 players can play at once
You can have up to 6 players
25 players
11 players
5 to 8 players play at a time
In scrabble only Two to Four players can play.
nine players
9 players in total
1-2 players.