Redux: Dark Matters is a shooting game by Hucast that is a sequel to DUX.
On May 9, 2012, a crowdfunding project began through Kickstarter began for Redux: Dark Matters. It was released on PSN, XBLA, Steam, and iOS, as well as the Dreamcast. The latter was a limited edition limited to 1,000 copies. The original Dreamcast version included an upgraded version of the precursor to Redux, DUX, titled DUX 1.5 which included additional improvements over the original release. DUX 1.5 was also available to purchase separately.
On February 25, 2015, Hucast released Redux 1.1, which improved picture quality and fixed a bug in the final boss battle. It was offered as an upgrade disc to people who backed the Redux: Dark Matters Kickstarter.
They also released a Redux 1.1 collectors edition, which came in a jewel case with the Redux soundtrack, a remixed soundtrack, and DUX 1.5. This version was limited to 300 copies.