Does Gears of War 3 allow local co-op + online co-op simultaneously?
Does GoW3 allow local co-op and online co-op at the same time? I want to know if my friend and I can play on split screen from my house and join a couple of friends online. What kind of games are allowed this way (if any)?
According to this website, yes, it is possible.
Does Gears support split screen play? How many players?
You can play 2 player split screen. The screen is split horizontally.
Is splitscreen with online play supported? (Combo Co-Op)
Yes, but both players must have Live Gold subscriptions.
Is LAN or System-Link play supported?
Yes, you can play any of the modes via LAN for the supported number of players.
How many players are supported in co-op play?
You can play 4 players through the campaign in co-op. You can play 5 players in Horde or Beast mode.