Good work and good luck with whatever you decide to make next!
Possible design improvements (all can be seen in the last screenshot):
* the color of the text in the top left corner is uncanny, doesn't blend with the rest of the screen, and doesn't provide good readability.
* huge areas like the right side look too patterny. Using something like procedural generation would make it feel much better (see e.g Tiny Wings)
We are into shipping product asap here; The Deeps is an awesome game (really!) and future versions are going to be even better.
wtf. that's not old. wait till you're in your 50s or 60s to call yourself old.
At least one research group saw a need for this sort of product, and it would be stupid easy to make. Have at it!
-- A friendly HS alum