See also some rougelikes, such as Cataclysm: Dark Days Ahead or (IIRC?) Dungeon Crawl: Stone Soup, which are often strong examples of open-source development, t

See also some rougelikes, such as Cataclysm: Dark Days Ahead or (IIRC?) Dungeon Crawl: Stone Soup, which are often strong examples of open-source development, though perhaps as many are one-man teams.