STEAMStar is a strategy game where you guide Galilei through eight worlds, each presenting a STEM problem to solve. Your task is to aim and destroy stars containing variables needed to solve the problem. However, not all variables are necessary, and some come at the cost of telescopes, challenging you to optimize your solutions.

In each world, you can attempt to solve the problem three times using different data combinations. If you wish to change combinations, a "scene reload" button allows you to start anew. To progress, you must manage your apple resources wisely, as they are essential for star destruction. Earn more apples by answering STEM questions, exploring STEAM combinations, or playing classic games.