"It's a video game rule: when in doubt, shoot it in the face," shouts Epic Games' Cliff Bleszinski as he guides late-night talk show host Jimmy Fallon through a battle against a leviathan in Gears of War 3.

Fallon welcomed Bleszinski on his show Tuesday night to talk Gears and to play through an early demo of the game. Click on the video above to watch a recap.

The demo may look familiar to those who watched Microsoft's E3 2011 press briefing. It's the same level showcased by Bleszinski during last week's event.

The full game launches Sept. 20 for Xbox 360. Recently, Game Hunters spent some time with the upgraded Horde mode. Head head to read more.