Note the "What is Replicube?" and "Introductory Puzzles" button on the bottom, which might be easy to miss.

Had hours of fun playing this with my son (steam version). Great work.

Hard to use on a mobile with the keyboard popping over the text editor, but looks like lots of fun. Wish there was a mobile app version.

Man, that's a fantastic way of making me interested in the game. I'd heard of it before, but up until seeing this I figured I'd have to spend money and hop onto my PC (where I play games, as opposed to my work laptop) to check it out.

Now, 15 minutes after clicking the link, I've tried the game out, had a fun time, and ... just might have to buy it.

I'm impressed that this sort of thing was possible with Godot too. Very cool.

OK this is really cool. I'll pick it up on Steam.

Very fun! Not sure if it's a me issue, but the music kept getting static-y in the browser version for me. Maybe something to look into.

related discussion:

Replicube: A puzzle game about writing code to create shapes (https://news.ycombinator.com/item?id=43979916)

I think today's answer is actually incorrect. Or at least the reference animation has a hitch where it shows all red for frames 12 and 13. if it shows 2 purples for frame 13 then the animation is smoother and actually the math is much simpler.

Nice!

On the leaderboard I'd like to see code size vs cycles in a 2D plot with the Pareto front highlighted.

doesn't work in firefox. no thanks.

i love this so much <3

Did anyone else solve the puzzle after finding a bug in today's puzzle where on step 13 the circle you were trying to match didn't change, but should have?

Oh, nevermind, it appears others noticed this bug, too!

This runs horribly in Chrome. Every other keypress is dropped and the music is super glitchy.

it would be absolutely amazing if we could have a puzzle very much like this that shows how to write a 3d FPS game in webGL. going absolutely step by step by showing how cameras work, then showing how a character is added , then showing how collision works, then showing how models can be swapped. imagine what an insane learning series that ll be

The developers are also behind JellyCar Worlds, which I found to be a wonderfully creative physics based "platforming" (there's a twist!) challenges/puzzles. It's ton of fun to play with a kid, yet there's a lot of really complex setups to really challenge yourself if you want to. A real gem!

I finished it with a code size of 118, 19.82 cycles per voxel. Don't feel like making an account, but how does that compare?

    d2 = x^2+y^2
    -- 6 / pi = 1.909859317102744
    angle = 6 + 1.909859317102744 * atan(x, y)
    
    if z ~= 0 or d2 > 20 then return EMPTY end
    if d2 < 11 then return GREEN end
    if angle > t then return PURPLE end
    -- ugly special case because reference isn't smooth at 13
    if t == 13 or angle + 12 > t then return RED end
    return PURPLE