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...)

PlatformsWindows, macOS, HTML5
Rated 4.5 out of 5 stars
(1,025 total ratings)
AuthorCosmic Adventure Squad
GenrePuzzle, Platformer
Made withUnity, Aseprite
Tags2D, Cute, Fantasy, Ludum Dare, Ludum Dare 48, Pixel Art, Singleplayer, Speedrun, Unity
Average sessionA few minutes
InputsKeyboard, Mouse
LinksSteam, Ludum Dare


Download NowName your own price

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

Development log


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Viewing most recent comments 1 to 40 of 907 · Next page · Last page

Very difficult for me, i can't do it. I'm stuck.  :/

Why can't I get past level 2 ):

sub 5 min 4:59.855


6:10:542 was my time lol ez

8:30 seconds. still better than my last time

8:34 seconds! Lets GOOOOOOOOOOOOOO!


I can't be the only one who though of something very very dirty

17:41 first tr


a very stressful experience xD

29:51. first time beating it!

i won!!!!!!!!!!
pretty good for my first completion, especially if you compare it to the other comments lol

Lol very fun game and a well though mechanic. I got some "getting over it" kind of despair some times :D
Also I don't know how I feel about this xD

The Last Level Is So Tricky I Can't Beat The First Part


That was a fun little game. Aside from that one part that made me tear my hair out.

Think you're my clone

i get better with every run im coming for that record

4th try

second try and im not stopping here


This game is better than I initially expected, so much fun to play with this mechanic.

I was trying to get it under 4 minutes for long time. it was a hard grind, but here we go.

ima try and go for world record next

i did it it was easy


i got a pb of 15;57 c:

9:13 nao ^_^

sub 9 woot woo ^_^

Deleted 23 days ago

yo, stop spammin

I feel very accomplished that i reached this on my 2nd attempt and it makes me happy to know that i teacher a lower time than the first couple people who commented


first run, didnt really know what I was doing half the time. Fun game, it definitely has that sense of silliness I like to see in video games.


I Finally beat it i have been trying for so long

(1 edit) (+1)



(btw 4 new ppl its 27 minutes not 27 hours at first i thought @gg_minkowski beat it in 4 hours)

pretty solid for the first run, congrats.

and yeah, time display with milliseconds is confusing at first.

Never. Again.

not bad for the first run. mine was around 1 hour.

Thanks, I watched a speedrun when I got stuck.

i can't get the last achievement on steam :c but is a great game i enjoyed it a lot :D


I remember when I start playing this my old time was 14 minute I think but I keep playing over and over again unit I got better.

(1 edit)

ZAMN 5 MINUTES?!?!?!?!?


good game. I thought I did pretty well, and then I checked the speed run records. well it wasn't as good as I thought at all :D

that's all I have. I don't think I can do better than this.


better than me

do you still keep playing? how better did you get


second time playing, first time finishing.


Viewing most recent comments 1 to 40 of 907 · Next page · Last page