Lab Zero Games tweeted the offer over the weekend, and Mane6, the developer of the MLP fighting game, has followed up and confirmed it's the real deal. At the time of publication it's at $437,000. It will only do so if the Skullgirls IndieGoGo crowd-funding campaign reaches $725,000. The developer of fighting game Skullgirls will offer its engine free of charge to the developer of My Little Pony: Fighting is Magic for free, but there's a catch.