crayon physics deluxe is a puzzle video game designed by petri purho and released on january 7, 2009. an early version, titled crayon physics, was released for android from 2006-2007 developed by acrodea korea, inc. "deluxe" won the grand prize at the independent games festival in 2008. it features a heavy emphasis on two-dimensional physics simulations, including gravity, mass, kinetic energy and transfer of momentum. the game includes a level editor and enables its players to download and share custom content via an online service.