# Pregame

> Pregame (pre.game) is market-maker software for Polymarket parlays. Users take the house side: bettors request parlay prices (Combos RFQs) on Polymarket, the user's automated engine quotes them inside user-set rules, and the user collects the stake up front — keeping it unless every leg of the parlay hits. No human is in the quoting loop; quotes go back in under 400 milliseconds.

Every content page has a Markdown twin: append `.md` to its URL.

## Pages

- [Home](https://pre.game/): The lander. "Every parlay pays somebody." One-line pitch and a live-styled parlay ticket feed.
- [The math](https://pre.game/the-math.md): The house-side math through worked examples — profit = margin × volume, parlay fair value (probabilities multiply), margin compounding per leg, EV per ticket, variance and night-to-night swings, bankroll sizing (~5% ticket / ~30% open / ~12% team), the same-game correlation trap, longshot pricing error, and margin-vs-fill-rate against competing makers.
- [FAQ](https://pre.game/faq.md): Every question first-time and professional makers ask, ranked by frequency and tagged by level (first night / running a book / quant corner) — from "do I need to know sports" and "can I lose more than I put in" to exact sizing math, calibration methodology, correlation policy, and adverse-selection handling. Served with FAQPage JSON-LD.
- [How it works](https://pre.game/how-it-works.md): The full plain-terms explanation — where parlays come from (Polymarket Combos RFQ), the 400ms quote pipeline, pricing (fair value + margin), why the house side profits over time, what you collect vs. put at risk, user rules and caps, safety rails, watch mode, and a glossary. Worked examples throughout, including a real fill ($10 collected, $58.54 at risk, quoted at 14.59¢ vs 13.83¢ fair).

## Key facts

- Platform: Polymarket Combos RFQ (request-for-quote parlay markets, settled on-chain on Polygon).
- Quote window: 400 milliseconds; quotes are signed and binding.
- The user is the market maker ("the house"): collects stakes, posts collateral for worst-case payout, profits from margin over fair value across volume.
- Fair value = product of leg probabilities from live Polymarket markets; the user's margin policy (follow-the-market percentage or manual per-leg-count bps, plus floors/team bumps/per-market pins) widens it into the quote.
- All risk limits are user-set (per-ticket, open exposure, fills/day, per-team caps); solvency is enforced in code — the engine cannot risk more than the wallet holds; ambiguity resolves to not quoting (fail closed).