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game below to begin. Each run feeds your local stats, leaderboard, and coaching notes.
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Riverboat BrokerQuote a two-sided market, manage spread width, and avoid getting picked off by the broker.
Fair valueSpread disciplineRisk control
Market Making
Stats Tracker
Attempts0
Best Score--
Average Score--
Last Game--
Areas To Improve
FocusStart a run
Strongest--
Play any minigame and this panel will turn your mistakes into a short practice target.
Riverboat Broker
Make two-sided markets on hidden three-card poker contracts. The broker knows the true
value, judges your spread, and decides whether to buy, sell, or pass.
Total Score0
Round1 / 8
Broker Edge0
Desk Trust50
Contract Brief
Broker Clue
Loading clue...
Candidate Rivers
--
Target Spread
--
Desk Clock
+12 pts now
Current Regime
Loading regime...
Generating a new contract.
Value Map
Base Value
Sum the three card ranks. Number cards = face value, J/Q/K/A = 11/12/13/14.
Regime TwistThis round's desk modifier will appear here.
Broker Behavior
If your ask is cheap the broker buys; if your bid is rich they sell; otherwise they pass.
You are always quoting one contract. Tight but informed quotes score
best. Too wide and the desk loses trust; too tight and the broker can pick you off.
Fast reads also earn more points while the desk clock is still rich.
Broker Verdict
Awaiting quoteNo broker action yet
Price the contract and see whether
the broker crosses you.
The hidden river card and true fair value will
be revealed after you submit a bid and ask.
Hidden Card
??
True Value
--
Your Market
--
Quote Time
--
Time Bonus
--
Round Points
--
Trade Blotter
Round
Deal
Quote
Broker
Pts
No rounds priced yet
Desk Tape
Desk Riverboat Broker ready.
Waiting for the opening deal...
Impact Courier
Pick one route and one shipment size each window. Cheap lanes get crowded fast, safe lanes
cost more, and your earlier decisions reshape the next round.
Delivered0 / 100
Remaining100
Window1 / 5
Total Friction0
Avg Cost / Unit--
City Network
How It Works
Choose One Route
Every window, pick a single lane for the whole shipment. You are deciding where
to send flow, not solving a full routing spreadsheet.
Cheap Vs Safe
Fast lanes start cheaper, but large shipments push their price up quickly.
Stable lanes cost more upfront but handle size better.
Congestion Persists
The route you use stays partially clogged next window. You can lean into one lane,
but that decision will echo forward.
Waiting Costs Money
Crates left undelivered after a window take an urgency penalty. Small, patient
dispatches can be smart, but not forever.
Scoring
Finish all cargo with low total friction. Full completion and earlier finishes score
best.
Dispatch Ticket
City Regime
Loading...
Urgency
--
Clear-Now Bonus
--
Generating a city regime.
Selected Route--
Dispatch Size0 crates
Estimated Window Cost0.0
Impact Lift0.0
Remaining After Window100
The whole game is one repeated judgment: hit the cheap route while
it is still clean, or pay up for the stable route and avoid getting trapped later.
Dispatch Verdict
Pick a routeNo dispatch yet
Pick one route and choose how big
the shipment should be.
Current route prices already include existing
congestion. Larger shipments raise your average fill price.
Chosen Route
--
Window Dispatch
--
Route Cost
--
Carry Penalty
--
Remaining Cargo
--
Finish Bonus
--
Final Score
--
Dispatch Blotter
Window
Route
Qty
Cost
Left
No windows dispatched yet
Courier Tape
Desk Impact Courier ready.
Waiting for the opening dispatch...
Estimathon
Question 1 / 10
Loading Question...
Estimathon Review
Final Score: 0 Points
Question
Your Range
Actual
Points
Mental Math
Score: 0Time: 120s
Lightning Arithmetic
Solve as many arithmetic problems as you can before time runs out. Press Enter to submit.
+1
Arithmetic
12 × 14
Time's Up!
Your mind is sharp.
0
Pattern Recognition
Score: 0Time: 120s
Sequence Decoding
Find the missing number in the sequence before time runs out. Press Enter to submit.
+5
Pattern Sequence
2, 4, 8, 16, ?
Time's Up!
Excellent eye for
numbers.
0
Option Delta Sprint
Estimate call delta from moneyness, time, and volatility. The goal is not memorizing Black-Scholes;
it is getting fast directional intuition.
Score0
Round1 / 8
Avg Error--
Best Streak0
Delta Ticket
Loading
Vol Desk
Estimate call delta
Loading option...
Spot
--
Strike
--
Vol
--
Expiry
--
+0
Delta Coach
Submit an estimate to get feedback.
Rule of thumb: ATM calls sit near 50 delta. Deep ITM moves toward 100; deep OTM moves toward 0.
Vol and time: More uncertainty pulls deltas back toward 50 when the option is away from the money.
Round
Moneyness
Your
Actual
Pts
No delta estimates yet
Kelly Sizing Lab
Size repeated bets from edge and payoff. Negative expected value should be a zero, while
positive expected value still needs restraint.
Score0
Round1 / 8
Overbets0
Discipline100%
Sizing Ticket
Loading
Risk Desk
Choose bankroll fraction
Loading bet...
Win Probability
--
Win Payoff
--
Loss
1.0x stake
Risk Cap
--
+0
Sizing Coach
Submit a bet size to get feedback.
Formula: full Kelly is (bp - q) / b, where b is net payoff, p is win probability, and q is loss probability.
Practice target: use half Kelly and obey the risk cap when the full Kelly answer gets too aggressive.
Round
Edge
Your
Target
Pts
No sizing decisions yet
Leaderboards
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Aggie