Plinko

Overview

Property	Value
Slug	plinko
Round type	Single-step
RTP	~97-99% (varies by risk level)
Volatility	Low to High (player-selected)
Devices	Desktop, Mobile
Provably Fair	Yes

Plinko is a ball-drop game where a ball falls through a triangular grid of pegs, bouncing left or right at each level, and lands in one of the multiplier slots at the bottom.

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Game Mechanics

How It Works

1. Player selects the number of rows (8, 10, 12, 14, or 16)
2. Player selects a risk level (Low, Medium, or High)
3. Player places a bet
4. The ball drops from the top, bouncing randomly at each peg
5. The landing slot determines the multiplier

Risk Levels

The risk level affects the multiplier distribution:

Risk	Low Multipliers	High Multipliers	Volatility
Low	Higher frequency	Lower peaks	Low
Medium	Balanced	Moderate peaks	Medium
High	Lower frequency	Higher peaks	High

Example Multipliers (12 rows)

Low risk: 1.2, 1.1, 1.0, 0.9, 0.6, 0.3, 0.6, 0.9, 1.0, 1.1, 1.2

Medium risk: 3.0, 1.5, 1.2, 1.0, 0.5, 0.3, 0.5, 1.0, 1.2, 1.5, 3.0

High risk: 33.0, 11.0, 4.0, 2.0, 0.5, 0.2, 0.5, 2.0, 4.0, 11.0, 33.0

Note

More rows = more possible landing slots = more extreme multiplier distributions. 16 rows with high risk offers the highest maximum multiplier.

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Round Flow

Plinko uses single-step rounds — one bet, one result:

sequenceDiagram
    participant Player
    participant Game as Plinko Game
    participant Beexar
    participant Wallet as Operator Wallet

    Player->>Game: Choose rows=12, risk=medium, bet=5
    Game->>Beexar: Place bet
    Beexar->>Beexar: Calculate path → slot=3, multiplier=1.5
    Beexar->>Wallet: POST /betwin (bet=5, win=7.50, finished=true)
    Wallet-->>Beexar: { balance: "502.50", transactions }
    Game-->>Player: Animate ball drop, show win!

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Configuration Parameters

Parameter	Type	Default	Description
available_rows	int[]	[8,10,12,14,16]	Selectable row counts
default_rows	int	12	Default row count
risk_levels	string[]	[low,medium,high]	Available risk levels
default_risk	string	medium	Default risk level
multipliers	map	—	Risk -> Rows -> Slot multipliers
bet_limits.min	decimal	Configurable	Minimum bet amount
bet_limits.max	decimal	Configurable	Maximum bet amount

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Game Result

The result returned after each round:

Field	Type	Description
path	string[]	Ball path at each peg (["L","R","L",...])
slot	int	Landing slot index (0-based)
multiplier	float	Applied multiplier based on landing slot

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Provably Fair

The ball’s path is determined by a provably fair algorithm:

1. Combined hash of server seed + client seed + nonce
2. Each bit of the hash determines left (0) or right (1) at each peg
3. The path is fully deterministic and verifiable after the round