Official Rulebook

HAGGL Rules & Strategy Handbook

This page documents exactly how sessions are scored and resolved — no hidden clauses.

Start Negotiating

Transparent Mechanics

We don't hide the simulation algorithms. Read the exact heuristics our AI uses to evaluate your offers.

Objective

Close the best possible deal before time runs out.

  • Every match starts with a high-value prestige asset and its list price.
  • Your goal is to lock in the lowest final price possible without failing.
  • A higher percentage discount yields a higher leaderboard score.

Round System

Each message costs a round, so words are currency.

  • You get exactly 10 rounds per negotiation.
  • One player message + one seller response consumes one round.
  • If no deal is reached by round 10, the negotiation fails.

Transparent Seller Constraints

The seller follows strict hidden math evaluated dynamically on the asset.

  • Absolute Floor: Evaluated at 75–82% of list price. Offers below the absolute floor are universally rejected.
  • Target Range: Typically 85–92% of list price. Offers near the target are heavily considered.
  • Offers between floor and target trigger AI counters, pressure tests, or strategic acceptance.

Walk Away

You can exit any time, but it ends the run.

  • Using Walk Away immediately marks the session as no-deal.
  • No leaderboard score is submitted for a no-deal session.
  • Sometimes resetting is smart if opening conditions are unfavorable.

Standard Scoring Formula

Savings % = ((List Price − Deal Price) ÷ List Price) × 100

A list price of $1,000 dropped to $760 yields a 24% reduction.

Common Inquiries

How is score calculated?

Savings percentage = ((List Price − Deal Price) ÷ List Price) × 100. Higher savings rank higher on the leaderboard.

Do all sellers behave the same way?

No. Each session generates one of four distinct psychological profiles affecting patience, floor limits, and concession logic.

Can I win by offering extremely low prices early?

Not usually. Every session has a hard unchangeable floor, and severely lowballing the AI often reduces momentum or frustrates the seller.

What happens if I run out of rounds?

If round 10 ends without an agreement, the run fails and no score is posted.