Grief Syndrome is a doujin game by Twilight Frontier (also known as Tasofro) which was released at Comiket 80 on August 13, 2011. It is a side-scrolling beat-em-up featuring the characters of Puella Magi Madoka Magica. 1 to 3 players can play with local (all gamepads/keyboards connected to the same computer) multiplayer, or online multiplayer with a patch.