Fish Master: Turn-Based Fishing!
After floundering around on different ideas, I finally settled on Turn-Based Fishing... 20 hours before the Compo ended..

Inspiration is obvious, but I was surprised how well it worked. Had I come up with the idea earlier, there's a lot more I could have done with it! Fishing seems to work with just about every genre, which I didn't expect to find out.
I only managed 3 fish/3 rods, but I think it shows pretty nicely what the intent was. If you're interested in this retro-style game, you can check it out here: https://ldjam.com/events/ludum-dare/41/fish-master
Now to sit back, relax, and try to get fish of the brain..