grief_syndrome
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 multiplayer.
Official site: http://www.tasofro.net/mdk/
More information: http://wiki.puella-magi.net/Grief_Syndrome
Download:
Part 1 - http://www.mediafire.com/?bzlg4lt8f2m0s52
Part 2 - http://www.mediafire.com/?ttc1hacdmyicp4b