LIKE many constructions, it started small. But now thousands of children with autism are making friends and learning social skills by playing a version of online building game Minecraft. Stuart Duncan got the idea through a popular blog he ran about his own experiences with autism as well as bringing up a son with autism. Other parents with autistic children started telling him that their kids were crazy about a game that let them explore a randomly generated wilderness. However, despite loving the game, many of the children were being bullied by other players.