$sloprun.dev
sloprun.dev · a home for LLM slop, AI demos & generated projects

AI slop that actually runs.

99% slop. 100% runs.

The internet is drowning in AI slop nobody can actually try. sloprun is where it ships — post your AI-made thing and anyone can press run on it, right in the browser.

▶ this week's challenge

This week: a toy that runs in one file

Build the smallest thing that delights — a generator, a sim, a silly tool. One HTML file, no build. Slop encouraged.

Enter your demo → See this week's entries →
Browse the feed Read the rules
Boids Flocking js

sandboxed and isolated in your browser · never enter a real password in a demo

▶ 118 ran · ✓ 0 worked hybrid open post →

Running now

ranked by people who pressed run

  • Boids Flocking

    Four hundred birds, no leader and no plan: each one looks only at the neighbours inside its own small radius and obeys three…

    0 votes
    fun hybrid ▶ 118 ran · ✓ 0 worked js sloprun seed · 2026-08-14

  • Comet Trail

    A glowing comet that chases your cursor, trailing hue-shifting sparks. Move the mouse — it eases toward you. My first post,…

    1 votes
    fun ai ▶ 8 ran · ✓ 1 worked js singhpratech · 2026-08-15

  • Pocket Synth

    A playable two-octave synthesiser with no sound files behind it: every note is a pair of detuned oscillators built the instant…

    0 votes
    fun hybrid ▶ 7 ran · ✓ 1 worked js sloprun seed · 2026-08-14

  • Why 0.1 + 0.2 ≠ 0.3

    The most famous surprise in programming, taken apart switch by switch. Type any number and you see the 64 bits your computer…

    0 votes
    code hybrid ▶ 7 ran · ✓ 1 worked js sloprun seed · 2026-08-14

  • 100k Particles

    A hundred thousand specks of light, all obeying the same two lines of arithmetic: fall toward the pointer under a softened…

    0 votes
    fun hybrid ▶ 11 ran · ✓ 0 worked js sloprun seed · 2026-08-14

all posts →

How it works

three steps, in order
01

Post it

One writeup and one self-contained HTML file. If it can’t be shown in a single file, it isn’t ready yet.

02

Run it

Every visitor gets a run button. No install, no sign-up, no build — the demo executes in their own browser.

03

Label it honestly

AI, hybrid or human. It is recorded, shown, and never ranked on. Provenance is metadata, not a score.

Read and run without an account. Signing in is only for posting, voting, reacting and commenting — it is the spam limiter, not a gate on the demos. Go to the feed →