Create a Machinations...

About this model

Create a Machinations simulation based on the fishing progression system from Stardew Valley.

Build a resource loop that simulates a player fishing over time, managing energy, catching fish of different rarity, selling them for gold, and using profits to improve efficiency.

Include these nodes and mechanics:

Pool: "Energy" Initial value: 100 Source: "Daily Recovery" Adds 20 energy each step back to Energy Drain: "Fishing Action" Costs 5 energy per action Randomizer: "Catch Outcome" Split into: Common Fish (60%) Rare Fish (30%) Legendary Fish (10%) Pool: "Common Fish" Pool: "Rare Fish" Pool: "Legendary Fish" Converter: "Sell Common" Converts each common fish into 20 gold Converter: "Sell Rare" Converts each rare fish into 50 gold Converter: "Sell Legendary" Converts each legendary fish into 120 gold Pool: "Gold" Initial value: 0 Drain: "Upgrade Rod" Costs 200 gold Converter: "Fishing Bonus" Each rod upgrade increases catch efficiency by improving rare fish probability.

Connections: Energy → Fishing Action → Catch Outcome

Catch Outcome branches to: Common Fish → Sell Common → Gold Rare Fish → Sell Rare → Gold Legendary Fish → Sell Legendary → Gold

Gold → Upgrade Rod → Fishing Bonus

Daily Recovery → Energy

Add charts tracking:

Gold over time Rare fish catches Energy level Rod upgrades

Simulation settings:

Run for 100 steps

Goal: Show how randomness, resource management, and reinvestment affect long-term economic progression in the fishing system.

"Create a Machinations..." is a public Machinations diagram shared in the Community by Yousuf Bartolome, with 38 components.

It was created in May 2026 and last edited in May 2026.

Open the diagram in the Machinations app and press Play to watch the resources move, adjust its values to test how the system responds, or remix it to make an editable copy in My diagrams.