~128 Leagues Under The Sea~

Play as the intrepid Future Cat, on a quest for wealth with which to feed his family. Boat and Platform around the haunting ruins of civilizations past.  But will he be able to escape with his life!?!?!

This game was made for Sylvie Jam #1, and as such followed the very specific rules that jam mandated. Check out the other entries too!

This game obviously uses assets from many other works. A full sample list / inspirations post / post mortum is here!


  • A sprawling open world
  • 4 unique endings
  • 26 NPCs, with clever little things to say
  • 300+ coins. Can you collect them all? I actually don't even know!
  • 5 original songs, and a couple stolen ones
  • Secrets!
  • Themes!
  • Motifs!
  • Vibes!
  • And More!


  •  R resets the game, in case you get stuck (a very real possibility)
  • M mutes the music, in case you want to appreciate the ambience, or you get sick of it.
  • L disables the wiggly effect NOTE: Apparently the wiggly effect causes a black screen for some people so if that's happening to you, try disabling wiggly
  • The rest is too much to explain, so you'll have to figure it out for yourself!

Let me know your high scores, what endings you find, what secrets you discover, who your favourite cat is, etc, in the comments below!

PlatformsWindows, HTML5
Rated 4.8 out of 5 stars
(9 total ratings)
AuthorJohnLee Cooper
Made withUnity
Tags2D, 3D, Atmospheric, Comedy, First-Person, High Score, Horror, Music, Narrative
Average sessionAbout a half-hour
InputsKeyboard, Mouse


Future Cat Sailor.zip 74 MB

Install instructions

Unzip And Play! If you're getting frame drops: dont worry, this is normal. Theres like 50 copies of delfino plaza rendered at all times after all.

Development log


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This was super cool. I really liked the mechanic of getting off of your boat into a 2d world, though I wish it made your 2d world face straight forward so I could line it up better. I think that's what the "zoom out" powerup was meant to help you with- figuring out how to get a coin that's to your left, but I think I could have preferred trying to line up multiple coins I could see and try to get them all in one go.

I played until I drove off the side of the map. The wiggle effect made my screen render as blank, and when I got to the end screen, it was also blank and the text didn't render. There probably is some more fun lore here but I didn't get to see it. I also enjoyed exploring below the water as a dead cat, plunging into the ever deepening depths. The towers on the horizon and the sinking depths give some nice cthulhu vibes.


thanks for playing!


Future Boy Conan!

It was great fun to explore the decadent atmosphere! Also, the moment the timer hit zero was very scary!!!!


ya!! What a great show. Thanks for playing!


this is all of the npcs in the game, in case anyone wants to try to find them all (that might actually be really difficult, especially in a single run)