The Indie Stone is a small independent developer responsible for the creation of Project Zomboid. Chris "Lemmy" Simpson, Andy "Binky" Hodgetts and Marina "MashPotato" Siu-Chong established The Indie Stone in 2009, later joined by Nick "Nickenstein" Cowen in 2011. The company first began working together on small projects in their spare time, developing mods for The Sims 3 and Civilization 5, most notably the Indie Stone Story Progression Mod for The Sims 3. Project Zomboid is The Indie Stone's first commercially released game. The studio has recruited more members over the years, especially following the release of build 41.