A downloadable game for Windows

~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 will come a little while after release in the form of a devlog, so stay tuned.


  • 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!

Updated 18 days ago
Rated 5.0 out of 5 stars
(5 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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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)