Alright, I'm in. First I have to admit that the theme didn't immediately excite me since the previous project I've worked on was Noita which actually fits the theme 100%. :)

But after a bit of thought I think I have something that would be fun to work on and might turn out to be a fun little game so I present to you: Goldf!

Here's the preliminary concept (which probably changes along the way but that's part of the fun)... You walk or fly in underground caverns discovering gold nuggets. You can only move the nuggets by "golfing" with them. You need to fling them to a portal to collect them, which consumes the portal, and finally you need exit through a portal as well before you run out of oxygen. There might be dangerous creatures as well which you can eliminate by hitting them with the gold nuggets. I'm hoping that there's a nice risk vs. reward kind of gameplay loop there where you need to balance your collected loot vs. the risk of running out of air.

Technically I'm hoping to do simple procedurally generated caverns (I have an idea ready) and I want to do a field of view effect, similar to Teleglitch, which I've already used once before in a LD game but I think the trick would work here nicely as well...

Let's see how it pans out! Time to fire up Unity and start working!