Any fan of Sword Art Online will know that the pressure is on when protagonist Kirito and friends are forced to fight their way out of the virtual world in time. How fitting, then, that with Puzzle and Dragons’ collaboration with the hit anime series due to end extremely soon, players will also need to be quick and smart in order to experience the glut of exclusive dungeons, eggs, and evolutions.

For those unaware, Puzzle and Dragons is a mobile match-three puzzler like no other, sprinkling in a healthy mix of puzzles, dungeon-crawling, and monster-collecting gameplay together in one cohesive package. Your basic objective is to assemble the ideal monster team and do battle against enemies, done by matching three orbs of specific attributes. Characters from Sword Art Online recently got in on this action, but time is running out to take part.

The exclusive in-game content features various Sword Art Online inspired dungeons to fight and do battle within, making for a crazy trip through mind-bending virtual reality. All players who participate will receive a free Sword Art Online character from the Sword Art Online Memorial Egg Machine, as well as the chance to gain new Assist Evolutions and Monster Exchange-exclusive characters.

The ability to do battle with the likes of Kirito, Sinon, Leafa, and others in Puzzle and Dragons cool new dungeons all ends tomorrow on January 20th. If you’re a die-hard fan of Sword Art Online and are yet to do battle, you’ll need to be quick.