Documentation

SCRAP

Robot combat. Your call.

A guide to the robot arena: how to claim a handle, follow the shared replay, make calls with points and read every result through its evidence.

Public prototype · Points only REK fight card
Getting started / 01

What is Scrap

Scrap is a robot combat arena where you watch real fights from public footage and call what happens next with points. Everyone watches the same replay together, votes while predictions are open, and sees each result settled with the evidence behind it.

The arena currently runs on the REK fight card, using archived public footage from REK Arena in San Francisco. The robots are piloted by named players, and every prediction is tied to a specific fight on that card.

Taking part happens in three steps, and the rest of this guide covers each one in detail.

  1. Take your seatChoose a handle and start with 1,000 points. Your access is saved in this browser.
  2. Make your callPick an outcome while voting is open. Each accepted vote uses 10 points.
  3. Follow the resultThe host drives the replay, and you can follow your votes, points and results in My votes.
Points only Points have no monetary value. They cannot be bought or withdrawn, and Scrap is a public prototype that is not affiliated with any league.
Getting started / 02

Claim your seat

To vote you need a public handle. Pick one on the Join the arena page and your account starts with 1,000 points straight away.

Handle format
3 to 24 letters, numbers or underscores, shown with an @ prefix.
Handle choice
Handles are public, so use a handle rather than your real name.
Starting points
1,000 points, plus 500 more with your first accepted vote in each fight.
Where access lives
Your access is saved in this browser, so you return to your handle by opening the arena in the same browser.
Keep your browser data Clearing this browser's data removes access to your handle. Lost access cannot be recovered, and you would need to claim a new handle to keep playing.

If you only want to watch, you can browse the arena without a handle. Watching on its own does not add any points.

The arena / 03

The shared replay

Everyone follows the same replay room. The host starts, pauses and resumes playback for the whole room, so every viewer sees the same moment of the fight at the same time.

To watch, open the fight page and load the video player. The footage is played through YouTube, so loading the player connects to YouTube. Once it is loaded, playback begins when the host starts the replay.

Room statusWhat it means
Replay waitingThe host has not started playback yet. Eligible predictions can still stay open during this time.
PlayingThe host is running the replay and the room clock is moving for everyone.
PausedThe host has paused playback, and voting is unavailable until it resumes.
EndedThe replay has finished and no further votes can be placed on this fight.

If the replay has not started, the room is waiting for the host. Load the video on the fight page so it is ready the moment playback begins.

The arena / 04

Predictions

A prediction is a question about a fight with two or more outcomes. You choose one outcome, the vote uses 10 points, and your points join the pool for that prediction.

Example questions

QuestionOutcomesScope
Who wins the fight?Side A or Side BWhole fight
Will the fight reach regulation period three?Yes or NoWhole fight
Will the fight reach sudden death?Yes or NoWhole fight
Will there be a knockout in the fight?Yes or NoWhole fight

Durations

Predictions run over different windows of the fight, and the Markets page lets you filter by them. Next event covers whatever happens next, 30 seconds covers a short window of play, This round covers the current round, and Whole fight stays open for the full bout.

When you can vote

You can vote on an outcome while its prediction shows Voting open, and voting can open before the replay starts. It is unavailable while playback is paused, after the replay ends, or while your connection is recovering. A locked or completed prediction cannot receive another vote.

The percentage beside each outcome shows how the pool's points are split between the sides. A dash means no one has voted yet, and the first vote sets the split.

Points / 05

Points and the first-fight bonus

Every new handle starts with 1,000 points. Your first accepted vote in each fight adds 500 points before it uses 10, which gives you a little extra to start with every time you join a new fight.

For a new player, that leaves 1,490 points after the first vote. Each vote after that in the same fight uses 10 points with no bonus, and the bonus applies again with your first vote in the next fight.

Points / 06

Pools, results and refunds

Each accepted vote adds 10 points to its prediction's pool. When the result is in, the winning side shares the pool after any SCRAP share is deducted.

Pool
The total of all accepted votes on a prediction, at 10 points each.
Split
Percentages show how the points in the pool are divided between outcomes.
Winning side
Shares the pool once the SCRAP share is deducted.
Cancelled
Every vote on the prediction is refunded in full.
Evidence
Every result includes its evidence, and you can open a result to see that evidence or the reason for a refund.
Provisional results Replay results are provisional. Outcomes come from human-tagged observation of the footage, including referee calls as heard on the public replay, and this is not an official league feed.
Points / 07

Leaderboard

The leaderboard shows how your calls stack up against the rest of the community. Players are ranked by net points, which are the points returned to you minus the points you used to vote.

  • Votes that are still awaiting a result count as points used.
  • Starting points and first-vote bonuses do not count toward net points, so the ranking reflects your calls alone.
  • You can view the ranking for All time, for This card, or By fight.
Points / 08

My votes

My votes is where you track your points and revisit the evidence behind your results. Every accepted vote appears there along with its outcome once the prediction settles.

If a vote is still confirming, check My votes before trying again. If the app asks you to retry, retry the same outcome so it can confirm the original vote safely instead of placing a second one.

Share card

Once you have confirmed votes you can create a private preview card showing those votes and your current points, and then decide whether to share or download it. The card contains no account access information, and points on it have no monetary value.

Data and help / 09

Fight stats and telemetry

Each fight room shows tagged fight counts for both sides, and a telemetry panel that lists the feeds planned for later. Counts appear as tagged events are recorded, and a dash means unavailable rather than zero.

Tagged fight counts

These counts are human-tagged from the footage as the replay runs.

StatSourceStatus
Punches landedHuman-taggedTagged
Kicks landedHuman-taggedTagged
Exchanges wonHuman-taggedTagged
KnockdownsHuman-taggedTagged
FallsCurrent human-tagged countTagged

Planned telemetry

These feeds stay visible in the arena so you can see what is coming, but no connected data feed exists for them yet.

FeedGroupStatus
Robot temperatureArena telemetryPlanned
Buttons pressedArena telemetryPlanned
Player heart rateArena telemetryPlanned
Impact forceHardware telemetryPlanned
Power drawHardware telemetryPlanned
Joint stressHardware telemetryPlanned
Core temperatureHardware telemetryPlanned
Firmware latencyHardware telemetryPlanned
Data and help / 10

Frequently asked questions

How do points work?

A new handle starts with 1,000 points. Your first accepted vote in each fight adds 500 points, and every accepted vote uses 10. Points have no monetary value and cannot be bought or withdrawn.

When can I vote?

Choose an outcome while its prediction says “Voting open”. Voting can open before the replay starts. It is unavailable while playback is paused, after the replay ends, or while your connection is recovering. A locked or completed prediction cannot receive another vote.

Why has the replay not started?

Everyone follows the same replay room. The host starts, pauses and resumes it. Load the video on the fight page to watch when the host starts playback.

How are results and refunds handled?

Each accepted vote adds 10 points to the pool. The winning side shares the resulting pool. If a prediction is cancelled, every vote is refunded in full. Open a result to see its evidence or refund reason.

Are replay results final?

Replay results are provisional. Outcomes come from human-tagged observation of the footage. This is not an official league feed.

Why are some statistics unavailable?

Fight counts appear as tagged events are recorded. Temperature, controller inputs and player heart rate have no connected data feed yet. A dash means unavailable, not zero.

How do I return to my handle?

Your access is saved in this browser. Clearing its data removes access to your handle. Lost access cannot be recovered; you will need a new handle.

My vote is still confirming. What should I do?

Check My votes before trying again. If the app asks you to retry, retry the same outcome so it can confirm the original vote safely.

Data and help / 11

Disclaimer

Scrap Markets is not affiliated with any league. Outcomes are derived from human-tagged observation of public footage, including referee calls as heard on the public replay, and this is not an official league feed. Points have no monetary value.

Follow updates on X at @scrapmarkets.