The Håtuna games (Swedish: Håtunaleken) were a 1306 conflict between king Birger Magnusson and his two brothers, the dukes Eric and Valdemar.
When Magnus Ladulås died in 1290 his son Birger Magnusson was only 10 years. He had already been elected as successor as a four-year-old, and he (and the kingdom of Sweden) now had a guardian, marshal Torgils Knutsson. In 1304 the dukes signed a document that forbade them from conducting their own foreign policy and kept them out of the royal court unless they had specifically been summoned. The bitterness over this agreement was probably the cause of the Håtuna games.
When marshal Torgils Knutsson returned from the third and last crusade in Finland in 1293 a feud had developed between the brothers, with the marshal supporting King Birger. Duke Eric, as a leader of men and politician possibly better king material than Birger, tried to establish an independent kingdom around Bohuslän, which he had received as part of his marriage to the princess Ingeborg of Norway, and Halland at the boundary between Sweden, Norway and Denmark. A civil war broke out, but by 1306 emotions had cooled to the point where the dukes acknowledged the son of Birger, Magnus Birgersson, as the successor to the throne.