In OTL the unreleased Tattoo Assassins game can be best described as an obvious Mortal Kombat knockoff (allegedly one of the worst), the challenge is to transform the ATL franchise into the Saints Row of Versus Fighting Games ideally with the original game being released in some form.
https://en.wikipedia.org/wiki/Tattoo_Assassins
https://en.wikipedia.org/wiki/Tattoo_Assassins