Half way through last year Blitz Arcade revealed plans to release 5 games to PC and downloadable services. While none of them have yet hit the Xbox Live Arcade one of the titles, CodaChain, was shown a couple of months ago at the Animex Festival in Middlesbrough, UK.

Spotted by the Superannuation tumbler blog, a great source for leaked projects, an off-camera video was captured of the event and put onto YouTube.

CodaChain was originally one of the winners in student game competition Dare To Be Digital in 2005, and was picked up by Blitz late last year. The game has an odd premise - a 3rd-person puzzle game where you must create a chain of people, each person giving new a new ability to overcome obstacles, as well as having a musical element where each character adds a new instrument to the background.

Of the 5 titles announced last year, only Buccaneers has been released, and only for the PC. CodaChain still appears to be working on an Xbox 360, so its safe to say it's still coming. Since this announcement, Blitz have also separately revealed and released PowerUp Forever, and announced Invincible Tiger.