What's the Matter? is a twin stick shooter that teaches the periodic table of elements as you play. You are Matty Matter — a bit of matter — sent on rescue missions throughout the universe to help other bits of matter in distress: crashed transport ships, stranded vacationers, prison escapees. Move through asteroid fields, dodge comets, fight off aliens and robots and other hostile creatures. When you die, you return to the beginning but carry earned upgrade points that can be applied to one of thousands of combinations, making each run its own configuration. Unlocks gate the periodic table's progress the further you go.