The enhanced version of Raiden IV, titled "Overkill" is coming to the PSN on April 29th. UFO Interactive will be handling the localization much like they handled Raiden IV on the Xbox 360, but this version of the game won't be a physical copy.
It's rare that you'd see a localization this quick for such a niche game, but it's hitting US shores only a few weeks after the Japanese release.
Already done everything in Metal Gear Solid V: Ground Zeroes? Try rolling everywhere
6:00 PM on 01.28.2015