Venture deep into the Cavern of Longing. Plunge your sword deep into the dragon's heart! How deep is your resolve? Post your best times in the comments!

  • Feel the weight of a giant sword!
  • Move in ways you never thought possible.
  • Overcome your deepest struggles.

Created in 72 hours for Ludum Dare 48 Jam. The theme was "deeper and deeper". 

Join the Deepest Sword Discord!

If you’re speedrunning, submit a time on!

Note: The game may take a moment to load. If the game does not load you may have to enable WebGL on your browser.


  • Move - A and D
  • Sword - Mouse buttons or left and right arrows
  • Respawn - R
  • Full reset - 0 (zero)

** You can rebind your controls in the pause menu!


Developed by Cosmic Adventure Squad (@squad_cosmic) Support us on Ko-Fi (



  • v0.1.2
    • Jam submission
  • v0.1.3b
    • Fixed crash when spamming return to checkpoint
    • Added PC and Mac downloadable builds!
  • v0.1.3c
    • Added button to quickly fully reset the game for speed runners!
      • Press 0 to do a quick full reset without refreshing your browser.
  • v0.1.4
    • Added a pause menu where you can rebind keys and change other settings
      • You can now enable milliseconds display for speed running!
  • v0.1.4c
    • Added new options for our speed running community!
      • Added lap display and total time toggle for the x10 format.
      • Added starting stage selector to make it easier to practice.
  • v0.1.5
    • Updated menu UI! Better organization and credits page.
  • v0.1.5c
    • Added best time display on completion screen and Ko-fi link on Credits page. Buy us a coffee :D (if you want...)



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Click download now to get access to the following files: 23 MB 20 MB 33 MB

Development log


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26, first try!

Will there be a linux executable soon?


sub 40min 1st tryTime

SUB 40!

Finally sub 6!!!

6 mins!!! 

YES!!! sub 10!!!

36 minutes. I spent 36 minutes of my life playing this game.
Great game, though my anger issues didn't like this one lol.


Nice Game!

owch hewp i stucc

my lowest is now 10 min 18 sec, 900 millisec



Good game. Pretty tough the first time playing through.

urghhhh, the last level of the last sword is so hard. i can't reach for it!

just do lol

lol, that's pretty helpful.

actually no, you were right!!! i could reach for it!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

good job:)


just got a time i'm gonna submit to :o

суки блять ну его нахуй прошел но пока входил блять ебанный рот этого казино скопировал емаил ну что бы не ебаться и все нахуй 34 минуты впустую 

beautiful game loved every second of it


I am now forklift certified


This is like getting over it but with a sword that gets bigger



(1 edit) (+1)
first sub 6 minutes WOOOOOOOOOOOooFirst sub 6 min

I loved the game but it was so hard. The dragon was kinda hot tho

First attempt! Really fun game!

i gave up at length 4


My new record!!! Still VERY far from perfect...

I got 4min and 59 sec. I forgot to take a screen shot so plez take my word for it.



Great game! It can be difficult, but it's just the right amount of challenging. Although I thought the final level was a bit more challenging than it should've been, but that could just be because I'm bad. The idea of having your vertical movement confined to a sword is fun and very unique! It can take some time to get used to though, but once you master it, it's really fun to use. I also love how later in the game you get a longer and longer sword. That gets more reach, but harder to use. Also while opening up more advanced levels and platforming techniques. I also like how the game forces you to go through the levels that you already went through. Sometimes they are easier or just flat out skippable, and sometimes you have to change the way you beat the level due to you longer sword. You can really feel like you're using a maxed out character on some level one enemies when going through the first few levels with a long sword. Over all, great and unique game. 7/10  


10 out of ten 


I f*cking hate this game.


My sword was in you 4 times, and I got burnt 4 times! I know the 5th time will be different but you're too hard so I'm heading back to town to grab a beer instead!


This is a genus game! The game mechanics are creative as well as the general idea. Every time you complete a level, you restart; however, the sword length actually changes the way you play the game. Thus, it makes the previous levels more, or less challenging as you progress. I like how you taunt the player on length 5 (reach for it!) lol. It's the games like this that are truly amazing. Great work! :)

Getting better and better... 

(1 edit)

Very good, sexy game! Definitely had some innuendos there... hehe
Sadly my time was over 25 minutes, realizing some things a bit late. Will re-run later.
2nd run: 8:18.113


i dont like this game.. its hard, you dont deserve a follow


MAYBE, the game is SUPPOSED to be difficult. Ur just bad. The game's fun BECAUSE it's difficult, NOT in spite of it.




this is very HARD and fun

i was at 15:00 but yellow took over 15 mins but a good gam


couldnt beat it at the last level my character kept getting stuck even know the ledge isnt even touchin him


Wow this is HARD, also what is the name of the platform used to make the pixel art?


Hey TacoSnack, we used Aseprite to make the pixel art!

i got stuck at third level :(


Wow, that was really cool

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