That Dragon, Cancer is an interactive adventure game that tells the story of a real-life couple, Ryan and Amy Green, and their son Joel who was diagnosed with terminal cancer at four years old. Through this game players can experience first-hand how the Greens coped with this tragedy as they relive memories, share heartache and find hope in the face of death. It is more than just a video game - it acts as a living painting; a poem; an immersive retelling of one family's journey through grief.