U.S. Patent no. 9,649,568: Game system for changing a difficulty level of a game
U.S. Patent no. 9,649,568: Game system for changing a difficulty level of a game Issued May 16, 2017 to Kabushiki Kaisha Square Enix Priority Date May 30, 2012 Summary: U.S. Patent No.…
9649568
difficulty level
dungeons
Game system for changing a difficulty level of a game
