Press play and select a game mode: CLASSIC MODE has all the original cards, including Protons, Electrons, Neutrons, Gamma, Alpha, and the antimatter cards! FRESH MODE has all the cards involved: Protons, Electrons, Neutrons, Gamma, Alpha, Antimatter, Quantum tunnelling, Fusion, Hydrogen, and Photons! ANTIMATTER MAYHEM replaces all the original subatoms with their antimatter versions (it is currently experimental). Select the cards you want to play, you can only play cards within your N(ewton) budget which resets every turn. Then press confirm to play the selected cards, different cards have different effects, read about them in the Cardpedia or in game. Try to get the enemy's health to 0, while making sure YOUR health does not.
Try and get the lowest time on all Game Modes! And remember to like and favourite! https://scratch.mit.edu/projects/874774552/ the sequel is here!