RPG.me

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Inspiration

Gaming is fun! especially when you invest time and energy to level up your character grinding hours a day to get stronger and look cooler, how about you apply the same principle to life?

What it does

Habit tracking apps have always existed, the difference with RPG.me is that it reflects real-life mechanics (e.g. skills level up and decay, energy restoration and consumption and health effects on it) and now involving our AI assistants that we tell everything in our daily life, using an MCP to connect to this game's engine your AI can help you track your habits and plan them (this introduces new game components and a customized experience for every player).

How we built it

Using Codex with GPT-5.6 (mainly Terra on Medium/High effort and Sol in complex cases) with providing the right context and agent instructions that sets a clear path for the development with housekeeping tips the agents maintain on each iteration to ensure context is up to date and knowledge is reflected to any Codex agent used. We started with a plan and a goal, and Codex built the rest (iteratively or /goal command)

Challenges we ran into

UI suggested by codex was not too great: This was solved by providing inspirations from other UI mockups and asking Sol to study the mockups and generate a UI that follow the same pattern. I also utilized a skill that uses playwright to spawn headless browser sessions to take snapshots of the website and visually inspect the output

Token usage optimization: This was resolved by offloading planning and research tasks to Luna, Utilizing Terra for creating basic features and then using Sol to refine the feature in high mode so that it's more production ready

Accomplishments that we're proud of

We were able to build the entire application in the matter of two days, and managed to implement complex features such challenges, characters design and more without having to write a single line of code, and the app works great!!

What we learned

Luna is quite a capable model and is sufficient for most of our work, if we had to do this hackathon again, we would offload more work to luna without worry about sacrificing quality of output and being more token efficient. Also skills greatly extend the abilities of Codex, skills for UI development and testing were the key difference in us being able to develop so quickly

What's next for RPG.me

UI/UX refinement (visual artwork, characters, theme, animations such as celebration, etc.)
Onboard more users to test and improve the alpha release.
Prepare for official release (Infrastructure, pentesting, paid features,..)