According to this article, Samurai Shodown NEOGEO Collection will be free at launch on June 11 at Epic Games Store !

SNK has just announced the Samurai Shodown NEOGEO Collection, and as the name implies, it collects six games in the fighter series, as well as a mysterious seventh. Best of all, we don't have long to wait: it releases June 11. Even better, you won't have to pay for it, because it'll be free-to-keep on the Epic Games Store from June 11 to 18.

The pack includes Samurai Shodown I, II, III, IV Amakusa's Revenge, V and V Special, which takes in all the series' games between 1993 and 2004. As a very curious bonus, a previously unreleased version of Samurai Shodown V will also be bundled in under the name Samurai Shodown V Perfect. According to the announcement it's "the stuff of legends to SNK fans."