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Office of the Commissioner · Sanctioned Play

SPIDER
LEAGUE

Find them. Photograph them. Be judged.

Add to Slack
Free · One channel · The Commissioner does the rest
The Game

A competition of observation

Spider League turns the spiders you were going to find anyway into a sport. Members post photos of wild spiders to one Slack channel. An AI Commissioner identifies the species, rates how dangerous it is to humans, rates how rare the find is, and awards points in the thread — usually before anyone has stopped screaming. Standings issue every Monday. The winner receives honor.

1

Find a spider

Your garage, a trail, a parking structure. Wild spiders only — pet store spiders are professional athletes and are ineligible.

2

Post the photo

Drop it in the league channel. That is the entire submission process. The Office reviews immediately.

3

Be judged

Species, danger rating, rarity, points, and one official remark — delivered in the thread for the whole league to witness.

From the League Files

What judgment looks like

These are real rulings from active leagues, reproduced word for word. Member names are withheld; the Commissioner's words are not.

The CommissionerAPPSeason 1

🕷️ OFFICIAL RESULT — Latrodectus sp. (Widow spider)

Basis for identification: A glossy dark globose abdomen behind a smaller cephalothorax with long thin legs, perched at the junction of a messy irregular silk tangle tucked into a dark ground-level corner — classic widow body plan and habitat.

Danger to humans: 8/10

If this is a Latrodectus the bite is medically significant with neurotoxic venom; keep hands well clear of this crevice.

Rarity: 5/10 · ID confidence: 60%

Points awarded: 🏆 75

“A shiny bulbous spider lurking in a tangle web in a dark corner — the one submission I'd rather you had photographed from considerably farther away.”— The Commissioner

Amended on appeal to Latrodectus geometricus, the brown widow, at 73 points.

The CommissionerAPPSeason 1

🕷️ OFFICIAL RESULT — Tegenaria sp. or Eratigena sp. (House Spider (funnel weaver type))

Basis for identification: Visible two-part body with distinct cephalothorax and abdomen separated by a waist, relatively long and slender but not thread-thin legs with visible banding or markings, flattened posture against a vertical wall consistent with funnel weaver or common house spider morphology.

Danger to humans: 2/10

House spiders in this group are not medically significant; bites are rare and typically produce only minor local irritation.

Rarity: 2/10 · ID confidence: 35%

Points awarded: 🏆 19

“A blurry, mid-distance wall photo of what appears to be a commonplace house spider — the league appreciates your enthusiasm, but the Submissions Standards Committee reminds all members that macro lenses exist for a reason.”— The Commissioner
The CommissionerAPPSeason 1

🕷️ OFFICIAL RESULT — Pholcus phalangioides (Long-bodied cellar spider)

Basis for identification: Visible elongated cylindrical abdomen clearly separated from cephalothorax by a distinct waist, extremely long thread-thin legs held laterally, and overall body proportions consistent with Pholcidae.

Danger to humans: 1/10

Cellar spiders are harmless to humans; their chelicerae are too small to pierce human skin in any meaningful way, and the 'deadly venom' myth is entirely unsupported by evidence.

Rarity: 1/10 · ID confidence: 62%

Points awarded: 🏆 11

“A cellar spider found on a wall — the league has received approximately four hundred of these this season alone, and I remain as unmoved as ever.”— The Commissioner
Scoring

The formula is public. Every ruling may be appealed once.

POINTS = ( DANGER × 8  +  RARITY × 6 )  ×  CONFIDENCE (0.5–1.0)

Danger · 1–10

Venom medical significance, bite likelihood, temperament. The league's marquee stat. A cellar spider is a 1. You know what a 9 is.

Rarity · 1–10

How uncommon the find is for a person going about their life. A common house spider scores low no matter how upset you were.

Confidence · ×0.5–1.0

The Commissioner's honest confidence in the ID. A sharp photo earns full credit. A blur you swear was a brown recluse does not.

Finds of Distinction

Hall of Fame

Loxosceles reclusa
Brown recluse · Season 1 high score
86 PTS
Latrodectus geometricus
Brown widow · dark ground-level corner, amended on appeal
73 PTS
Steatoda grossa
False black widow · on a wall, dramatically framed
34 PTS
Real finds from active leagues, Season 1. Member names withheld.
Selected Regulations

The rules, abridged

  1. Wild finds only. The spider must be found in its natural course of business. Zoos, pet stores, and anyone's terrarium are ineligible.
  2. Live spiders only. A dead spider is a former spider and scores nothing. The Commissioner can usually tell.
  3. Your own photo, taken at the time. Internet images are fraud. The league runs on honor, and the league has very little else.
  4. One submission per individual spider. The same porch spider may return no sooner than the following week, by which time the Office expects you two to have grown as acquaintances.
  5. Non-spiders score zero. Harvestmen are of the order Opiliones and are not spiders, and the Office will not pretend otherwise no matter how the membership feels about it.
  6. No staging. Do not relocate, contain, chill, or prod a spider to improve the shot. The spider's circumstances are part of the find.
  7. One appeal per find. Disagree with a ruling? Reply "appeal" in that find's thread. The Commissioner re-examines the photo and rules Affirmed or Reversed, correcting the standings if the Office erred. The ruling on appeal is final.

Rule Zero — Safety

The league awards photography, not capture. Do not touch, handle, or provoke any spider — and the high-danger finds worth the most points are exactly the ones to photograph from a distance, with zoom. Danger ratings are AI-generated estimates, not medical guidance. If anyone is bitten by a spider of possible medical significance, seek actual medical care. The Office handles standings disputes only.

Expansion

Bring the league to your workspace

One click installs The Commissioner into your Slack. Pick a channel, post a spider, receive judgment. No setup, no configuration, no mercy.

Add to Slack

After approving: invite @The Commissioner to your league channel, then post a spider

League Dues

Keep the Commissioner seated

Spider League is free to play. Each ruling costs the Office about a cent in AI fees. If your league has enjoyed its judgments, a voluntary contribution keeps the gavel funded.

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