H2O is a combination of puzzle and a sandbox game. Use the different properties of water in different states to solve the puzzles in each level. Credits: Game Design By Firmin Rousseau Programming by Quentin De Capele Art by Victor Lebrun. How to Play: How to Play:Q and D or directional arrows to move W to switch to the liquid state X to change to the gaseous state C to switch to the solid state IMPORTANT : in the sandbox, press SPACE for water