Charlie Cleveland joins Dirk and David to discuss his work on the underwater survival game Subnautica–an indie hit and a standout in the genre. The trio talk about the game's somewhat unusual theme and the difficulties of making a game set underwater. They also talk about how that theme helped influence the game's mechanics and continually reinforced the core design pillar for the game: thrill of the unknown. Finally, Charlie takes some time to talk about the early access process, aspects of the game that got cut, and a little discussion on the game's frosty followup title, Subnautica: Below Zero.