Mobile Puzzle Game Development

The Radiant Orchard
Comprehensive Product Requirements Document & Technical Master Specification
Document Version 2.1.0 (Detailed Roadmap Edition)
Target Platforms Mobile (Android & iOS)
Core Engine Stack Unity 6 + Flutter Embedding via flutter_unity_widget
1. Executive Summary & Core Concept
The Radiant Orchard is a tactile, fast-paced 3D mobile diorama game designed to teach nine moral virtues
through intuitive touch gesture mechanics and biological health metaphors. Set on a tranquil, Tiny
Glade-inspired floating island, players step into the role of the Caretaker.
The game begins on an entirely grey, desaturated, and quiet floating rock featuring only two permanent
landmarks: an ancient Stone Well and a grand Wisdom Tree. Players interact with the world by planting
virtue-fruit trees, listening to the needs of visiting characters (Stickmen), and delivering healing tonics.
Restoring these characters brings vivid pastel colors back to the island, gradually transforming a lonely grey
stone into a thriving, colorful, and vibrant paradise.
2. Complete User Journey & Game Flow
Phase 1: Launching the Game & The Empty Island
• The Starting Atmosphere: When opening the game for the first time, users are greeted by soothing lo-fi
background music and an isometric view of a floating island.
• The Environment: The terrain is completely grey, desaturated, and devoid of color. Only the mossy Stone
Well and the Wisdom Tree stand tall.
• The Well Wish Feature: Before starting, players can interact with the stone well by dropping a coin to make a
personal wish, establishing an immediate emotional tie to the world.
Phase 2: The First Visitor & The Guided Introduction
• The First Arrival: A slow-moving, completely desaturated Stickman walks onto the island path.
• The Symptom Bubble: A 3D thought bubble appears overhead, showing a visual symbol of fatigue or
emotional distress.
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THE RADIANT ORCHARD Product Requirements Document · v2.1.0
• The Gentle Guide: A friendly, non-intrusive on-screen guide pops up to help the user: “Our first visitor needs
help. Let's plant our very first tree to gather what they need.”
• The First Action: The user taps a designated spot to plant a tree, learns how to harvest the fruit using a
simple touch gesture, and watches it transform into a glowing tonic that heals the visitor.
Phase 3: The Core Gameplay Loop
Once the introduction concludes, every level follows a repeating, engaging 4-step cycle:
• The Request: Grey, low-poly Stickmen spawn on the island displaying symptom-based thought bubbles.
• The Harvest: The player performs precise touch gestures on the screen to harvest the required fruit from the
orchard.
• The Delivery: The harvested fruit instantly transforms into a 3D Vital Tonic bottle that flies in a smooth arc
trajectory straight to the requesting Stickman.
• The Transformation: Upon receiving the tonic, a color shader sweeps across the character, restoring full
pastel colors, executing a joyful celebration animation, and raising the island's global Vibrancy Meter.
Phase 4: Progressive Difficulty & Island Expansion
• Level 1 (Relaxed & Easy): Slow pacing, generous patience timers, and simple requests so the player can
comfortably learn the mechanics.
• Mid & Late Levels (The Challenge): As players advance, multiple visitors arrive simultaneously, patience
timers drop faster, and managing multiple tree types requires strategic quick thinking.
Phase 5: The Wisdom Tree Micro-Quizzes (Every 5 Levels)
• The Pause Event: After completing every 5 levels, standard gameplay pauses for a rewarding break.
• The Scenario: A clean bottom-sheet UI overlay slides up displaying a situational scenario (“A friend is feeling
restless and anxious. What fruit do they need?”).
• The Reward: Selecting the correct answer (Watermelon / Peace) triggers Golden Harvest Mode, doubling
earned points and bathing the island in a warm, glowing particle filter for a limited time.
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THE RADIANT ORCHARD Product Requirements Document · v2.1.0
3. Virtue, Health & Gesture Matrix
Every fruit in the game represents a moral virtue, maps to a biological health concept, requires a specific touch
gesture, and triggers unique particle visual effects (VFX):
Virtue Fruit Biological
Health Stat
Mobile Input
Gesture
Visual Particle Effects
(VFX)
Love Strawberry Heart /
Circulation Double Tap Red Heart Sparks
Joy Pineapple Immunity /
Energy Double Tap Golden Sun Flares
Peace Watermelon Nervous System Double Tap Teal Wave Rings
Patience Lemon Detox / Digestion Long Press Bright Yellow Bubbles
Meekness Grapes Respiratory /
Breath Long Press Soft Purple Mist
Self-Control Apple Brain / Focus Long Press Blue Synapse Sparks
Kindness Peach Skin / Glow Fast Swipe Peach Pastel Dust
Goodness Banana Muscle / Strength Fast Swipe Yellow Velocity Trails
Faithfulness Cherry Bone / Stability Fast Swipe Ruby Crystal Shards