I like this game! It's very short, but the music is a delight and the art is very appealing. It feels more like a quick experiment for you guys more than anything else, but if you ever decide to make a sequel, then you'd do well to make something for the player to do after the final boss-fish, like earning gold for ludicrous upgrades like a super-fast boat or a fishing rod that can catch multiple fish at once, or even a zone after filled with Krakens for the player to catch. Actually, from your art-style, why don't you try making a more slapstick or sensational fishing game? Make up weird fish or use sea creatures from mythology/popular fiction like Cthulhus or Octosharks and throw in lots of fish puns as flavor text. Make something hilariously light-hearted!
 "Fishy Waters"){kind=icon}
 "Rebuild"){kind=icon}
 "Rebuild 2"){kind=icon}