According to a recent interview with Gears of War 3's Lead Producer Chris Wynn, the single player campaign for Epic's hotly anticipated Xbox 360 exclusive will be 10-12 hours in length.
Speaking to VideoGameWriters.com at PAX East, Wynn said:
"I can guarantee it’s the best campaign yet in the series. It’s longer; it plays out to be about 10 – 12 hours long, so it’s quite a bit longer than 1 or 2. There’s a lot of great moments and really cool storylines. You’re going to love it."