the App Store while existing copies became unplayable on updated devices. The code framework for the Minotaur Project games enables them to be rebuilt for both Mac and PC versions. Gridrunner was released for the Mac in August 2012. Return to console games In April 2013 it was announced that Llamasoft had signed a deal with Sony Computer Entertainment to create a tube shooter for the PlayStation Vita called TxK. The game would be Llamasoft's fourth tube shooter in two decades and was described as the spiritual successor of 1994's Tempest 2000 for the Atari Jaguar. As Minter explained in his development blog the project goals were to create a more traditional, straightforward and accessible tube shooter than Space Giraffe, to improve on the flaws from Tempest 2000 and Tempest 3000, and to evoke the neo-retro aesthetic without being cheesy. TxK was released on 11 February 2014, by digital download through PSN. At the beginning of 2015, Minter was threatened with legal action by Atari, claiming that TxK was too similar to Tempest 2000 - a game that Minter himself wrote, but Atari owned the rights to. This raised several issues, including Atari claiming that Minter that had illegally copied material from his own source code and violated design copyrights on his own design traditions. Sony was unwilling to support Minter and as such future versions of TxK were blocked from release, although the PS Vita version remains available. Minter and Zorzin's first publicly available game for a modern home console, Polybius, was released on the PlayStation 4 on 9 May 2017. The game features extensive support for the PlayStation VR headset, based on Minter's experience building the unreleased VR version of TxK. Shortly after release, Llamasoft were contacted by Trent Reznor of the band Nine Inch Nails, asking to use visuals from Polybius as the basis for the music video for the song "Less Than"; the video was released on 13 July the same year. In August 2017, Atari, SA issued a press release, announcing a partnership with Llamasoft to develop Tempest 4000 on the PlayStation 4 and Xbox One video game consoles and Windows-based personal computers. It was released in July 2018. In March 2018, Minter announced that the framework for the Minotaur Project had also been ported to the PlayStation 4 and stated an intention to release enhanced versions of the Minotaur Project games as console games