In fact, it's a co-op roguelike "created under the mindset of having friends scream at each other". Sounds fun!
We Need To Go Deeper is a four-man multiplayer, somewhat FTL-like game based around exploring the deep sea, searching for treasure and trying not to die in the process. Well, FTL-like in the sense that there's a vulnerable ship (submarine) to explore with and there's a crew to keep the whole thing from blowing up (flooding and imploding), but each player only controls one crew member. Look:
The graphics, by the way, are hand-drawn and inspired by Édouard Riou's artwork for Verne's 20,000 Leagues Under the Sea. The game sports a really unique look.
We Need To Go Deeper [Steam Greenlight]