Games Knockin System Requirements Knockin Knockin is a third-person arcade game with a dash of action from the masters at Brainchild Design. The game is published by Brainchild... Read more About the game Buy the game Requirements Gallery Similar games Reviews and ratings Release dates System Requirements Knockin The game has been released or is in development for PC, but we do not yet know its system requirements. Bookmark the page and check back later.