Three Decoders 2, The - Key to the Carousel is an online retro game which you can play for free here at playretrogames.com It has the tags: learning, skill, and was added on Feb 13, 2015. It has been played 2561 times and is available for the following systems: prgsp / prgsp / Sony PlayStation You can also play Three Decoders 2, The - Key to the Carousel unblocked.