SOLS-Runner
This is a submission for the June Solstice Game Jam
What I Built
SOLS-Runner is a narrative puzzle adventure inspired by the June Solstice and the idea that growth often comes through periods of darkness, uncertainty, and change.
Players take on the role of Leo, a young runner who feels disconnected from the world around him. During an evening run through Greenwood Park, he discovers a mysterious cosmic crystal that challenges him with a series of puzzles centered around astronomy, balance, and seasonal change.
As each challenge is solved, the world gradually regains its color. The gray landscape transforms into a vibrant environment, visually representing Leo's journey from stagnation toward hope and self-discovery.
The game combines storytelling, environmental progression, educational puzzles, and AI-assisted learning into a short experience that can be completed in a single sitting.
Key Features
- Solstice-themed puzzle challenges
- Environmental restoration system
- World saturation progression (0% → 100%)
- Interactive narrative experience
- Gemini Crystal AI Tutor
- Educational astronomy concepts integrated into gameplay
The core message of the game is simple:
Just as the Earth moves through cycles of darkness and light, people also move through periods of uncertainty, growth, and renewal.
Video Demo
The demo video showcases:
- Leo's introduction and discovery of the cosmic crystal
- Puzzle progression through all challenge stages
- The Caesar cipher / Enigma-inspired puzzle
- World saturation increasing as challenges are completed
- Gemini Crystal AI Tutor explanations
- The final reflection ending sequence
Code
GitHub Repository:
https://github.com/HungH206/sols-survivor
Live Demo:
https://sols-runner-640174174409.us-central1.run.app
How I Built It
I intentionally kept the scope small so that I could create a polished and complete experience within the game jam timeline.
Frontend
The game was built using:
- Phaser.js
- React
- TypeScript
- Vite
- Tailwind CSS
Phaser was used to manage gameplay scenes and world interactions, while React handled interface elements such as challenge panels, dialogue systems, and puzzle interactions.
Environmental Progression
One of the central mechanics is the World Saturation system.
The game begins in a nearly colorless state. Every successful puzzle completion increases world saturation and transforms the environment. This visual progression reinforces both the solstice theme and Leo's emotional journey.
Puzzle Design
The puzzles introduce astronomy concepts such as:
- Solstice
- Equinox
- Seasonal balance
- Earth's relationship to sunlight
To make the experience more interactive, one of the puzzles was redesigned into a Caesar cipher / Enigma-inspired challenge where players rotate encoded letters to reveal the correct answer.
AI Integration
A custom Gemini Crystal AI Tutor was added to provide educational explanations after puzzle completion.
Players can ask the crystal why an answer is correct, why alternative answers are incorrect, and how the concept relates to seasons, light, and balance.
The game sends requests through a secure server endpoint that communicates with Gemini 2.5 Flash, ensuring API keys remain protected.
Prize Category
Best Google AI Usage
Google AI played a significant role throughout the project.
During development, Google AI Studio was used for:
- Story brainstorming
- Character development
- Puzzle ideation
- Scope refinement
- Narrative writing
- Educational content generation
In the final game, Gemini powers the Gemini Crystal AI Tutor, an in-game learning assistant that provides contextual explanations for puzzle answers and transforms educational content into an interactive experience.
Rather than using AI solely during development, I wanted AI to become part of the gameplay itself.
Best Ode to Alan Turing
One of the game's challenge sequences is inspired by classical cryptography and codebreaking concepts associated with Alan Turing's work.
The Caesar cipher / Enigma-inspired puzzle encourages players to decode hidden messages while learning about astronomical concepts related to the solstice.
This mechanic serves as a small tribute to Turing's contributions to computing, cryptography, and problem-solving.
Lessons Learned
This was an exercise in balancing creativity with scope.
I began with a much larger vision involving multiple locations, expanded puzzle systems, and additional mechanics. During development, I learned that reducing scope often leads to a stronger final experience.
By focusing on a single environment, a clear emotional journey, and a small set of polished mechanics, I was able to create a complete game that aligns closely with the theme of the jam.
Final Thoughts
SOLS-Runner is ultimately a story about movement.
Not just the movement of the Earth around the Sun, but the movement people experience as they navigate uncertainty, growth, and change.
Sometimes the longest journey begins with a single step into the unknown.
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