Algodoo

ELEMENTS
Names: Neutronium, Muonium, Hydrogen, Helium, Deuterium, Lithium, Helium Hydride, Tritium, Beryllium, Helium Dimer, Lithium Hydride, Boron, Lithium Helium, Carbon, Helium-3, Nitrogen, Oxygen, Helium-4, Fluorine, Neon, Water, Helium-5, Sodium, Magnesium, Heavy Water, Helium-6, Aluminum, Silicon, Helium-7, Phosphorus, Sulfur, Helium-8, Chlorine, Argon, Helium-9, Lithium-6, Potassium, Calcium, Helium-10, Scandium, Titanium, Carbon Dioxide, Vanadium, Chromium, Manganese
Fun facts:
1) Muonium lasts up to ~0.00000304 seconds
2) Helium-5 lasts literally 0.000000000000000000001 seconds
3) All He(value)H's only exists as (something idk bro) complexes except Helium Hydride
4) Helium-6 beta decays into Lithium-6, but it lasts long enough to be observed