Sunless Sea is getting a sequel called Sunless Skies with a Kickstarter for the game launching sometime in February 2017. That’s according to an announcement made by Failbetter Games during an interview at EGX. The game is inspired by C.S. Lewis and Event Horizon, and is currently in pre-production.
You really need to check out Sunless Sea. The dread-drenched sewer ocean explorer has been on Steam Early Access for a little while, but now it's done. It's a mix between Sid Meier's Pirates and your darkest lovecraftian nightmares—in other words, fantastic. Not convinced? Read how I went mad and died horribly.