Can "We Need To Go Deeper" be played solo?
Solution 1:
We Need to Go Deeper can be played solo, with 1-3 AI controlled bots instead of other crew. The bots are pretty simple and will automatically do certain things; they can't pilot the sub but can man weapons and repair things well enough.
I played the game like this for a bit and found it a little dull. Without the teamwork, the game just becomes driving a 2d submarine while you trust the bots to do all the other work.
Solution 2:
This Steam review by Rompateer mentions (sic):
you can play solo but i wouldnt recomend it. The bots are terrible and it gets kinda boring
Based on this, it seems like you can play solo, though it wouldn't be a very good experience.