Arnott has released the Deep Sea software, and provided Tech Hive with detailed, step-by-step instructions for how to make the installation. If you have access to a gas mask, a steady hand, and the ability to withstand extremely claustrophobia-inducing situations, you can try Deep Sea for yourself. (By the way, this is not an April Fools' Day joke.)
Arnott is now working on SoundSelf, a meditative game that responds to vocal input with visuals and music. The Kickstarter drive for that has six days left.