H+H=H2

H+H=H2 is a Sokoban-like puzzle game with pseudo-chemistry mechanics. You push hydrogen atoms around each level, combining them until no hydrogen atoms remain. It includes 60 handcrafted levels and a solitaire mode.

Combine atoms

Colliding two hydrogen atoms combines them into H2. Combining H with H2 produces H3, which cannot be pushed. Later levels introduce more mechanics, including helium atoms that can push everything, even H3 atoms.