LudumData

Funnel World by andriybyelikov

[raw]
made by andriybyelikov for Ludum Dare 59 (JAM)

About

Funnel World is a real-time ray traced puzzle game featuring optics related puzzles. The name Funnel World comes from my particular model of simplifying the rendering equation: going from a world of integrals to a world of wavefront funnels to a world of signals.

Controls

  • O. Toggle Full Screen
  • P. Toggle Resolution Scale (depending on your machine you may need to lower the resolution)
  • WASD. Move
  • Click and drag. Rotate the camera
  • Space. Jump
  • E. Interact
  • Looking at stuff from close enough. Displays a text box of what the player character thinks about the thing

Tools

  • Engine: ludumdare58+
  • APIs: WebGL2 (OpenGL ES 3.0)
  • Programming Languages: JavaScript, GLSL
  • UI Authoring Languages: HTML, CSS
  • Scene Authoring Language: JSON
  • IDE: Code - OSS
  • Development Server & Resource Bundler: Vite
  • ~~Music. Yamaha PSS-A50, Bitwig Studio Essentials~~ (Didn't have enough time to make music for the game)

Fun feedback I would like to hear from you all in the comments

  • How long did it take you to figure out the first puzzle?
  • Did you go to the moon?

Screenshots

scrot1.png

scrot2.png

Walkthrough (Contains spoilers)

!> ### Room 1 !> You fall from the sky into a dark courtyard. Grab the eastern torch. With the torch in your hands, face the easternmost section of the northern wall. That section of the wall is the only one that is reflective and you will see your torch's light reflected in it. While looking straight at the wall and seeing your torch reflected on it, go straight into the wall and you will make it to the second room. !> !> ### Room 2 !> After crossing the wall you appear in a bright room with a moat that you cannot cross. On the other side of the moat there is small mirror hanging on the wall. Look directly at it and it will teleport you across the moat. After you make it to the other side of the moat read the purple note, and with that you have cleared the game.

Link https://github.com/andriybyelikov/ludumdare59
Original URL https://ldjam.com/events/ludum-dare/59/funnel-world

Ratings

Overall 803th 2.756⭐ 43🧑‍⚖️
Fun 811th 2.439⭐ 43🧑‍⚖️
Innovation 484th 3.3⭐ 42🧑‍⚖️
Theme 777th 2.607⭐ 44🧑‍⚖️
Graphics 578th 3.415⭐ 43🧑‍⚖️
Given 55🗳️ 68🗨️

Feedback

Lemma
Apr 21st · 03:25 UTC
Really cool graphics, but I wasn't able to rotate my camera very much. I couldn't look up very much, and I couldn't turn around. It might be an issue with the build specifically - my mouse was getting stuck on the sides of the screen.
LDJam user 374028
Apr 21st · 03:29 UTC
@lemma My bad, I forgot to mention that in order to rotate the camera you have to hold left click and drag. It's not the build, it's my peculiar taste in implementing camera controls.
Kenoshka
Apr 21st · 03:31 UTC
10 minutes in, still cant figure out the first puzzle( although the optics part of puzzle mentioned in desciption sounds promising
lizelive
Apr 21st · 04:04 UTC
![Screenshot 2026-04-20 210305.png](///raw/f24/52/z/71ca0.png) what is this shadown?
T C
Apr 21st · 04:06 UTC
Maybe I'm just too tired from the post-game-jam brain, but I cannot figure out the first puzzle. I'll try again at a later date when my brain isn't so mush.
Lemma
Apr 21st · 04:07 UTC
@andriybyelikov I tried the game again. I found the "light that cannot be reached" up above but nothing happened when I interacted with it.
LDJam user 374028
Apr 21st · 04:07 UTC
@lizelive I'm pretty sure that's just a dark wall.
LDJam user 374028
Apr 21st · 04:09 UTC
@kenoshka @t-c I see. Thanks for your feedback. So it's harder than I anticipated it would be. I thought people would solve it in no time at all.
LDJam user 374028
Apr 21st · 04:12 UTC
@lemma Perhaps that is not *the* "light that cannot be reached". Maybe there is another interpretation.
lizelive
Apr 21st · 04:21 UTC
@andriybyelikov I promise there are triangle.![Screenshot 2026-04-20 210305.png](///raw/f24/52/z/71cb4.png)
LDJam user 374028
Apr 21st · 04:29 UTC
@lizelive Honestly I have no idea what these two triangles are. The player character has a shadow. Perhaps that's what it is but I can't say for sure.

![scrot3.png](///raw/c05/b5/z/71cbd.png)
lizelive
Apr 21st · 04:39 UTC
@andriybyelikov illuminati confirmed
breadstick
Apr 21st · 04:48 UTC
I don't know if I reached the moon, but I did reach the sky above the room of white. The review I leave for this game cannot be read, but if you look at it, it will pull you toward it?
T C
Apr 21st · 15:13 UTC
Alright, back at it. I finally figured it out. The first puzzle took me a good 20 minutes, and half of that was aimless wandering or trying the same things over and over. I was far too distracted with the
!>Reflective sphere thing, assuming that something to do with the reflections on the spere was the key forward.... I was close! But then like, the 2 blades of grass making what looked like some kind of archway on the sphere, also kind of looked like a door...... I got so distracted with those thoughts

that I didn't explore as many options as I could have. Unfortunately, the thing that gave it away was less
!>The reflection on the wall

and more
!>The fact that there's a gap in the wall in the area where you're supposed to see the reflection

But I did end up making it through. The second room was interesting, I liked the idea of being pulled like that. I kind of figured in your question 2 (making it to the moon) you were hinting that

!> The plate could gain you infinite speed if you're looking up at an angle and you view it as you're falling. It pulls you back up and you keep your speed from falling

But looked like that was not the answer. And yes, I did

!>Jump all the way to the moon! And through it! And past it! I would have liked at some point for you to be in range of something that would have pulled you towards it, and for a place to land... butttt

it was really, really cool, with nice visuals.
LDJam user 374028
Apr 21st · 15:46 UTC
@t-c The reason you saw the gaps is because collision detection and triangle watertightness are buggy in my game. And the moon is just an easter egg, that's about it. I'm glad you liked it and thank you so much for your feedback!
xiyuan
Apr 22nd · 00:35 UTC
这个画面让我晕3d了
ExciteMike
Apr 22nd · 00:53 UTC
!> I did eventually get out of the first room, but I'm not sure how the clue helps
Theogen
Apr 22nd · 01:34 UTC
Aghh I was so close! I saw the

!> reflection

pretty early, but just didn't realize it was something special. I had to use @t-c's hints to get out of the room.

Great job, very unusual game! And super impressive that you coded the engine + ray tracing yourself!
Purrseus
Apr 22nd · 11:15 UTC
15 minutes in, I give up. I'm sorry, I really can't figure it out.
Alex Mulkerrin
Apr 22nd · 15:15 UTC
Having a raytracer and being able to dynamically adjust the resolution of it is very cool. Sadly I also couldn't make my way out of the first room even with people's spoilers.
Tkap1
Apr 22nd · 16:09 UTC
It took me way too long. Camera controls are also a bit awkward.
Mersaries
Apr 23rd · 16:08 UTC
Camera control is not very convenient. The game looks interesting! but what needs to be done is not clear)
I understand that this is a puzzle, but I spent a lot of time on the first level and didn't understand what to do.
Jo Bettaque
Apr 23rd · 16:09 UTC
Unfortunatly, i wasn't able to figure out the puzzle without the hints on here, but cool look.
pres2300
Apr 25th · 04:37 UTC
I don't have much to add to what others have said. I had to use @t-c's spoilers to figure things out because I, too, was convinced the sphere, blades of grass, and locked torch had something to do with the puzzle. The second room was almost overly easy after that. The camera controls were also very awkward.

I do think this was a very good looking game, and you did great on the lighting. My GPU fans were spinning up from this, haha. Nice work on that!
LDJam user 384829
Apr 25th · 05:37 UTC
I don't really know what to do. The graphics were great, although moving the camera was a bit annoying, if the mouse was locked and you didn't need to drag it would've been much better. Also I don't play with inverse mouse on so it took some time to get used to, maybe if there was a way to toggle that? (I do understand it's hard to make that in such a short timeframe though). Well done though, it is still really good, especially the graphics.
rhewid
Apr 25th · 20:21 UTC
The camera controls are not working well, i need to constantly click and move the mouse to move the camera, the resolution change did not work for me. I guess there is a great idea and puzzle game behind it but I couldn't figure it out.
Baturinsky
Apr 26th · 11:24 UTC
A bit too eldtritch for me. Could not figure what is happening and what to do.

But thanks for the idea of adding a full screen button to the embedded HTML version. Did not know this is an option, so had to remove this version for my game, because window was too small for it.
Rentem
Apr 26th · 19:46 UTC
It took me less than 2min to get to the second room. But it was by pure accident :see_no_evil:

Was an interessting play. I had my share of problems adjusting to rotating the camera, I was always turning in the wrong directione :laughing:

Nice work!
LeReveur
May 01st · 18:52 UTC
Didn't took me too long (maybe 5mn ?) to find the first puzzle end, but I must admit it's not that easy, I understand that some didn't find it, as I mainly did only because there are very few things to inspect… The second one was anecdotic, but at the end I'm not sure of what you mean by exiting the room "backwards" - I assumed it could be a reference of some glitchs used by speedrunners on some games but I'm really not sure of that :sweat_smile:
That said, last LD I decided to follow you and your work on a raw raytracing game engine, and I like to see that you improved it, and I will continue following to not miss the next (if it comes) - I started "messing with" computers things early in the 90's, and speaking of 3D rendering, especially with PovRay, thanks to a passionate teacher who shared the basis. It was an amazing new world for me, and since then I never stoped hoping that, one day, we could have real time full raytracing rendering… And that's what you are in by now! Not that the Gfx cardboards propose is bad, but… meh… this is still a mix with conventional 3D rendering, it's very beautiful but technicaly less… "appealing"
oller125
May 02nd · 16:05 UTC
An interesting idea. The camera controls are quite awkward and it feels like the FoV is a bit off.
ellaris
May 03rd · 09:44 UTC
The camera control is very awkward.
zhangzhimu
May 03rd · 13:19 UTC
The game instructions and interactions are both excellent! The scenes are very interesting.
If some sound effects could be added to enhance them, it would be even better.
Kaijiro
May 03rd · 13:20 UTC
Wow, that first puzzle was hard ! Not really sure how did I manage to solve it tho :sweat_smile:
Impressive engine btw :smile:
Ty Victorson
May 04th · 01:48 UTC
I do wish that pc users could lock the cursor, but I got used to the cam movement pretty quickly, the graphics looked nice with the pixelated form, and I enjoyed solving the puzzles, though the first room I just ran around for a few mins before locating the gap to go through. It was a nice little game especially considering you made the engine!
ljol3
May 05th · 02:40 UTC
I liked the visual style and shadowing.
Artur Hawkwing
May 07th · 00:03 UTC
It made a lot more sense once I realized I had missed the interact button! Nice puzzles -- and the infinite jumping at the end was fun!
LDJam user 430734
May 08th · 02:41 UTC
hard to figure out but very cool!
F1Krazy
May 08th · 17:22 UTC
It's cool that you were able to make a game revolving entirely around real-time raytracing, but unfortunately you've fallen into the same trap I've seen so many other games fall into this Ludum Dare, which is not making it clear enough what you're actually supposed to *do*. It took me about a minute just to get the hang of where I was and how to move around properly, because all I could see was a green dot in a black void with zero context. From there I got as far as picking up the torch, but I have absolutely no idea what I'm supposed to do with it. There's a walkthrough, but the fact that I need one for the very first puzzle in the game tells me that something is deeply wrong.
LDJam user 374028
May 08th · 18:53 UTC
@f1krazy Yes, your are supposed to fall from the sky as soon as the game starts to get an overall picture of the stage, but I unfortunately realized too late that on some machines shader compilation hangs hard and when it's done the player has already hit the floor looking down at the poorly lit floor. And as for the first puzzle I definitely made it too hard it seems without explaining any consistent game mechanics to the player. Perhaps my first puzzle went too hard against gaming conventions and I admit I did a very poor job explaining it save for a note with a hint on the floor that is too cryptic. This combination made my puzzle too The Legend of Zelda: Second Quest-esque, and the solution isn't even between the two torches or at some symmetry point according to post-NES Zelda puzzle tropes. Then there are also the camera controls. I tried simulating a mobile-like control scheme where you move the camera by dragging with your finger but I seem to have implemented a pinching-like motion where the world turns around you instead of a motion like dragging to the left to look left where you tilt your head to to the left.