Pacific Rim will hit Japan on August 9th, while Lost Planet 3 will be released on August 29th. More details regarding the collaboration will be announced at a later date.
Lost Planet 3 takes place on a planet called EDN III, and allows you to fight Akrid aliens both on foot as well as in a mech (called “Rigs”). Meanwhile, Pacific Rim is a film where mechs (called “Yaegers”) do battle with Kaiju monsters. The similarities between the two are what resulted in the collaboration.