Gears of War 3 will have a casual mode – Destructoid

Stepping into the multiplayer mode of any game is no laughing matter when you’re a newbie to the franchise. Experienced

Interview: Gears of War 3's Rod Fergusson – Destructoid

Gears of War 3 Beast Mode Insane Difficulty Without Failing a

Game Design, Omegathorion

madmanwilmot2's Gears of War 3 Big Thread - Xbox Gaming - WeMod

Gears of War 3 Beast Mode Hands-On - GameSpot

One last look at Gears of War 3 from new eyes – Destructoid

Gears of War 3 Beast Mode Insane Difficulty Without Failing a

Down But Not Out, Gears of War Wiki

Gears of war 3 has 3 player local coop. For campaign only though