Elementeo is a chemistry-based card game in which elements have their own personalities—oxygen becomes Oxygen Life-Giver, sodium becomes Sodium Dragon, and iodine becomes Iodine Mermaid. Elements can be combined to form compounds and interact with properties and oxidation states. For example, Oxygen Life Giver rusts metals, Copper Cyclops shocks nearby element cards, and Helium Genie airlifts element cards. The goal of the game is to reduce an opponent to zero electrons by capturing them.
Source: en.wikipedia.org/wiki/Elementeo