Karlson is a platform game where you take on shooting, running and jumping challenges to complete the level by getting to the tongue-in-cheek Milk prize. The focus is on skilled movement and precision shooting. As you fight your way out of the facility, you discover the truth behind your past. And, apparently, the milk.

Play involves identifying what you need to do in each setting and the best way to proceed. This is usually a combination of parkour-style wall running, jumping, swinging and grappling around. But you also have a range of guns to take on enemies more directly.

Karlson has a test-chamber aesthetic similar to Portal, and a bullet-time shooting mechanic like that in Superhot. The result is an original experience that combines humour and action in an experience that offers single-player story mode and multiplayer modes. There is also a map editor planned.