CLANG

CLANG was a game by Subutai Corporation that was initially built on the Source engine before being moved to Unity. The game was conceived by author Neal Stephenson and was to be a one on one sword-fighting game that would require Razer Hydra hardware to control the sword. It is unclear when development began, but in October 2010, Gabe Newell posted on the hlcoders mailing list searching for a developer, presumably on Neal Stephenson's behalf. Michael Change was the sucessful applicant and helped to develop the game on the Source engine (https://www.polygon.com/features/2013/12/6/4864300/clang-michael-chang-neal-stephenson). Change left in February 2012 (https://www.linkedin.com/in/mflux/details/experience/), at which point a switch to Unity was already being considered as it was "a little bit easier to prototype with" (https://www.polygon.com/features/2013/12/6/4864300/clang-michael-chang-neal-stephenson).

The game was launched on KickStarter in June 2012 and sought to raise $500,000 - a goal which it achieved. In its first update it said that engine had not yet been decided but they were "leaning strongly towards Unity" (https://www.kickstarter.com/projects/260688528/clang/posts/243878). A later update in June suggested that Unity was even more likely (https://www.kickstarter.com/projects/260688528/clang/posts/249737). A demo was released in April 2013 (https://www.kickstarter.com/projects/260688528/clang/posts) which was running on Unity. The videos posted on the KickStarter appears to show in-game footage of the Source engine build.

In September 2013 development was paused due to funding issues and the inability to find a publisher: the inability to find a publisher was attributed to the coupling of the game with the Razer Hydra hardware (https://www.kickstarter.com/projects/260688528/clang/posts/604023) - an extra outlay that many gamers may not be willing to make just to play the game. Development ended in September 2014 (https://www.kickstarter.com/projects/260688528/clang/posts/989911).