That Dragon, Cancer is an adventure game that acts as a living painting; a poem; an interactive retelling of Ryan and Amy Green’s experience raising their son Joel, a 4-year-old currently fighting his third year of terminal cancer. Players relive memories, share heartache, and discover the overwhelming hope that can be found in the face of death. It is a videogame composed of pain and hope. It is a story of my son. It is a script written day by day. It is life that moves us space by space, propelled by a mystery we call grace.