The latest trailer for "Pacific Rim" sets the stakes pretty high for humanity trying to fight a losing war against giant monsters from deep beneath the Pacific ocean.

"Go big or go extinct," is the latest tagline attached to the marketing for Warner Bros.' hopeful hit directed by Guillermo del Toro, invading theaters on July 12.

See video: 'Pacific Rim' Viral Marketing Prepares for Massive Monster Attack

And big is exactly what audiences should expect in this tale about giant robots squaring off against giant monsters.

The most extensive look at the big-budget creature feature yet shows a Jaeger (the robots) slapping a Kaiju (the monsters) across the face with a boat. A big, big boat.

Another big moment? "It's Always Sunny in Philadelphia" star Charlie Day finally speaks! Hear what he has to say below.