• Production pipeline (per factory)

  • Boat → Crane (fish from boat to conveyor) → Conveyor (waypoints to machines) → Machine 1/2 (worker pick → process → drop) → Conveyor → Storage (packets). Power drains over time; players refill it to keep the belt and spawns running. 

• Upgrade systems (per factory, level 1–20)

  • Boat (speed, catch capacity), Conveyor Power (drain rate, belt speed), Machine 1 & 2 (process time), Storage (capacity). Machine 2 is unlocked later. All state is persisted via a FactoryPrefSystem with keys like FactoryID_Salmon_Boat_Level. 

• Orders

  • Order boat arrives; player selects one of three orders (required packets + cash/coins reward). Crane loads packets from storage onto the boat; claiming completes the order and grants rewards. Timer-based flow for “wait for boat” → “loading” → “ship on the way” → “wait for new order.” 

• Economy

  • Four currencies: Cash (main), Coins (upgrades/shop), Diamonds, Tickets. Packets earn cash/coins (values configurable per factory in ScriptableObjects and upgradeable). Shop and IAP-style flows for purchasing currency. 

• Missions

  • 40 missions (Salmon 0–19, Crab 20–39): Unlock Factory, Upgrade Boat/Power/Machine1/Machine2/Storage to target levels, Unlock Machine 2. Each mission has a reward type and amount (Cash, Coins, Diamond, Ticket). Completion is checked against FactoryPrefSystem; rewards are claimed via mission UI. 

• Dual factories

Salmon and Crab factories with separate unlock, upgrades, storage, and missions.

• Staff system

Six staff types per factory (Fishing, Power, Conveyor, Processing Machine, Discard Pile, Storage). Unlocked with coins after meeting upgrade requirements; they provide bonuses (e.g. faster crane, 20% faster processing, extra storage, packet value %, discard refund).

• Daily rewards

7-day cycle (Cash, Coins, Diamonds, Ticket). Timer (e.g. 24h) and “claim” state saved; optional 2x reward via rewarded ad; “No Thanks” grants hold cash.

• Funding boat

Boat cycles (start → wait point → stop); when available, player can open a panel and claim random cash rewards (1K–1M with weighted probabilities). Rewards and availability gated by factory progress.

• Fortune spin wheel

Lucky wheel with reward types (Cash, Coins, Diamond, Ticket) and configurable amounts; integrated into UI (SpinWheelPanel).

• Speed-up power-up

Time-limited global speed boost (e.g. 1.5x) with availability cycle; activation via rewarded ad.

• Shop

In-game shop for purchasing Cash, Coins, Gems, Tickets; economy display formatting (K/M/B).

• Ads integration

Banner, Interstitial, and Rewarded ads (Google Mobile Ads); rewarded ads used for Funding Boat reward, Daily Reward 2x, and Speed-up.

• Recipes / product info

Recipe panel and recipe icons on packets (e.g. Salmon/Crab) for clarity of product type.

• Tutorial

TutorialManager drives onboarding and can control visibility of panels (Staff, Recipe, Spin Wheel, etc.). 

• Engine & stack

Unity (C#), UGUI, TextMeshPro. Third-party: DOTween (UI and animation), Google Mobile Ads, UiShiny (UI effects), Coffee UI Effects, Camera Controller (profiles), Epic Toon FX (VFX). In-app purchasing package present (com.unity.purchasing).

• Architecture

• Singleton-style managers: UIManager, MissionSystem, AdsManager, Dailybonus, etc.

• Per-factory flow: ProductionFlowManager owns BoatManager, CraneManager, ConveyorManager, MachineManager (x2), StorageManager, OrderManager; each factory has its own FactoryItemData ScriptableObject.

• Persistence: PlayerEconomyManager (static, PlayerPrefs) for currencies; FactoryPrefSystem (static) for all factory-specific progress (unlocks, levels, upgrade progress, staff, packet counts, packet economy).

• Production flow

Conveyor uses waypoint lists for movement to Machine 1, Machine 2, bin, storage pile, recycle; fish and processed items moved along waypoints. MachineManager uses a worker state machine (Idle → Picking → CarryingToProcess → Processing → CarryingToDrop → Returning) and coroutines for movement and processing with fill UI. CraneManager and BoatManager use similar coroutine-based sequencing and events.

• Data-driven design

FactoryItemData ScriptableObjects define factoryId, prefabs, timings, economy (packet cash/coins, sell values), unlock costs. MissionData + MissionSystem define the 40 missions; MissionData.IsCompleted() queries FactoryPrefSystem. OrderData structures for order configuration.

• Platform

Android/iOS ad unit IDs and mobile-oriented UI (panels, buttons, timers). Async scene loading with LoadingManager and rotating tips.

• Systems design

Designing a full production chain (boat → crane → conveyor → machines → storage → orders) with multiple currencies, upgrade tiers, and mission goals.

• State and persistence

Centralized, key-based save system (FactoryPrefSystem) for many upgrade types and two factories without key collisions; economy and daily reward state in PlayerPrefs.

• Modular, data-driven code

ScriptableObjects for items and missions; manager-based structure with clear references between systems (e.g. ProductionFlowManager → child managers).

• Animation and feel

Worker animations (Idle, Walk, Picked Walk, Cooking), DOTween for UI and daily reward shake, fill bars for processing and power, particle effects for feedback.

• Monetization and retention

Ads (banner, interstitial, rewarded), daily rewards, spin wheel, funding boat, speed-up, and shop/IAP hooks.

• Mobile UX

Panel-based UI, camera control toggles, loading screen with tips, tutorial flow. 

• Full factory simulation loop: boat → crane → conveyor → dual machines (with worker state machine) → storage → orders, with power management and upgrade-driven parameters.

• Scalable persistence: one FactoryPrefSystem supporting multiple factories and many upgrade types with consistent key naming.

• 40 missions with typed objectives and rewards, plus 6 staff roles per factory with requirement and bonus logic.

• Multiple retention/monetization systems: daily rewards (with timer and 2x ad), funding boat, fortune wheel, speed-up ad, and shop.

• Dual product lines (Salmon & Crab) with separate progression and mission sets.

• Polished production feel: worker animations, conveyor waypoints, processing fill UI, and VFX/sound hooks.

• Mobile-ready: Google Mobile Ads integration, async loading, and Unity IAP package in use.