For the seminar Computational Design an analog drawing game was digitized, translated into 3D, and implemented in a Grasshopper/Rhino user interface for both human and computer players. In the originial game, two players take turns making single, continuous marks with differently colored pens. There is no winner and the goal is simply to collaboratively produce an interesting composition. The digitized version of the game explored what makes an abstract drawing “interesting”, and if such interest can be artificially reproduced using simple rules. A 3D version was subsequently explored that adapted the principles of the 2D game to the composition of prismatic solids.