Ultra Ultra, the small Copenhagen-based studio behind sci-fi stealth-puzzler Echo, have officially closed their doors today. Announced quietly through Twitter, they state that “Ultra Ultra has ceased to exist”. I’d always been aware that Echo had never sold as well as it should have, but it’s still tragic to hear that such a talented team are going their separate ways just a year and a half from the release of their first game. There is one small bit of good news – the recently-optioned film (as reported by Deadline) is still in production, also confirmed by the studio via Twitter.