A wish! A wish for a fish! In Ondřej Žára's new roguelike Goldfish, you play as a fish who's plenty content until you're caught by a fisherman who lets you go if you agree to grant him a wish. It's a classic motif, and here it provides for leagues of roguelike questing goodness. You'll grind your way through underwater tunnels, duking it out with other sea creatures, and equipping a range of uniquely goldfish-oriented weapons and armor — which will challenge your notions of what games like Nethack can be.
You can restore your health by eating seaweed and, oddly enough, need to replenish your oxygen supply by pulling the air from bubbles whenever you go underwater. I hadn't been aware that was a problem for fish. I used to keep an aquarium and not once did I get up to find them gasping for air above the surface. (Other than the one with a pack-a-day smoking habit of course, but he doesn't count!) For an innovative take on just what roguelike games even are, you should definitely sample this delishy fishy dish.