16 players...4 consoles Turbo-117
16 max (system link) 4 on local
Up to two players can play in the Co-Op Campaign mode on Halo: Combat Evolved.
not much, about 25?
Up to 16 with system-link, but only 4 with split screen.
depending on what time in the day, there can be more than a million players
you can do 1v1 2v2 or 3v3 teams.
The Social Slayer playlist in Halo 3 has two teams of five players each, so ten people can play at a time.
2 or more players it has multiplayer option
It's the same as halo 3 (:
A maximum of 16 players on Multiplayer Matchmaking in the Big Team Battle Playlist
up to 4 players if u have that many controllers but only on split screen as xbox live stopped
Lot's i can say, well like thousands! or maybe millions! Halo is a very poplar game series believe me.