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Darwin Kastle is also a game designer and the Creative Director for White Wizard Games. Their deckbuilding game Star Realms has won numerous awards, including the 2015 SXSW Tabletop Game of the Year Award, four Golden Geek Awards for Best 2-Player Game, Best Card Game, Best Indie Game and Best Handheld Game, two Dice Tower Awards for Best Two-Player Game and Best Small Publisher, and Best Card Game: Fan Favorite at Origins 2015. He has designed Star Realms, Hero Realms, The Battle for Hill 218, The Battle for Sector 219, and Space Station Assault. He has also worked on Epic Card Game, the VS Trading Card game, Battleground Fantasy Warfare, EpicTCG, and .