An absolute gem of a game this and now perhaps a good time to go back and spend some proper time with it, as the rather large The Sunken Sea update is out now.
Blending elements and a feel of the likes of Minecraft, Terraria and more it's a great underground exploration and crafting game that's currently in Early Access. It continues to do well after selling 500K in two weeks.
The new biome can be accessed once you've defeated the first three bosses, which brings down the wall that separates the sections of the game. There's also the sub-biome Forlorn Metropolis, a new boss, a new side-boss, 5 new enemies, a fishing merchant, boats, a new workbench type, portals you can craft for teleporting around, 10 new weapons including a bow, new food and fish types and lots more. Trailer is below:
Looking forward to digging more into this one. Works great on desktop Linux and Steam Deck with the Native Linux build that's Deck Verified.