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Free AI coding contestsEveryone has AI. Prove you can build.

Free AI build contests · 4 open · Season 0 closes Oct 31

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~/physics-game
$ 1337 login
signed in .... @you
$ 1337 enter physics
contest ...... PHYSICS · closes Oct 31
saved ........ .1337/entry.json
$ 1337 submit --url https://my-game.dev
submitted .... build #1
checks ....... queued
$ 1337 status
rank ......... unranked · judging opens Nov 1
The 1337 Mac app: live contests, the judge queue and your builds in one window

Season 0

4 briefs, free to enter, open until Oct 31, 11:59pm ET. Each one below is live. Play with it.

All contests
Live game

PHYSICS

A physics-driven 3D game in the browser.

Judged by
Ratings 50 · Arena votes 30 · Panel 20
Window
Open until Oct 31
Read the brief
Demo
Click or press Space to play
Live game

ARCADE

Build a browser game with AI. Any genre.

Judged by
Arena votes 70 · Ratings 30
Window
Open until Oct 31
Read the brief
Prompt1 / 1

an 8-step drum machine. one screen. dark. make the playhead glow.

Shipped as generated0 edits
Live website

ONE SHOT

One prompt. One generation. No edits.

Judged by
Arena votes 80 · Ratings 20
Window
Open until Oct 31
Read the brief
F10.804/5 fields
{
  "provider": "Harbor & Vale Studio LLC",  // ok
  "client": "Northwind Logistics Inc.",  // ok
  "effective_date": "2026-09-14",  // ok
  "term_months": "12",  // want 24
  "governing_law": "Massachusetts"  // ok
}
Opens Oct 5 algorithm

EXTRACT

1,000 messy documents. Hidden labels. Highest F1 wins.

Judged by
F1 90 · Cost 10
Window
Oct 5 – Oct 31
Read the brief

The board

Live numbers from api.0x1337.tech, refreshed every 20 seconds. Nothing on it is simulated.

See the full 1337 leaderboard

Live contests3
Entries0first entry takes #1
Ranked builders0
Season closes in0d 15:03:21
Connecting to api.0x1337.tech
ContestStatusEntriesΔ SessionRankedJudgingActivityClock
ARCDARCADElive0#1 open+00ARENA 70 · RATE 30Closes in0d 15:03:21
1SHTONE SHOTlive0#1 open+00ARENA 80 · RATE 20Closes in0d 15:03:21
PHYSPHYSICSlive0#1 open+00RATE 50 · ARENA 30 · PANEL 20Closes in0d 15:03:21
XTRCEXTRACTOpens soon0#1 open+00F1 90 · COST 10Opens in0d 00:00:00

Judged by builders. Scored in the open.

Every contest publishes its recipe before it opens. The weights below are the real ones for this season.

  1. 01

    Arena votes

    Two entries side by side, builders hidden. You play both and keep one.

    ARCADE 70% ONE SHOT 80% PHYSICS 30%
  2. 02

    Ratings

    One entry, scored on the criteria the contest published before it opened.

    ARCADE 30% ONE SHOT 20% PHYSICS 50%
  3. 03

    Panel

    A small technical panel scores the finalists against a public rubric.

    PHYSICS 20%
  4. 04

    Auto-scored

    Your output against hidden labels. No votes, no opinions, instant leaderboard.

    EXTRACT 100%

Season 0 closes
Oct 31 at 11:59pm ET.

Every dot behind this is one hour of the season. The orange one is now.
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