OpenAI 2026 hackathon

Among Demons Browser Game

Roguelike dungeon crawler card game playable in browser

Solo project by Lucian Adrian Rosu · 1 likes · 0 comments

View the project on Devpost

Archive position — measured, not model output

1 like on Devpost

505 of the 7,850 archived projects have more likes, and 1,758 share exactly 1 — so this project's #595 place in the like-ranked listing is a tie-break inside that group, not a ranking.

Projects (log scale)

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Likes on Devpost. ▲ marks this project's group.

Show the figures
LikesProjectsShare of archive
05,58771.2%
11,75822.4%
22843.6%
3–41321.7%
5–9751.0%
10+140.2%
Devpost like counts for all 7,850 archived projects, captured when this archive was built.

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Executive Summary

The company appears to be a solo developer project — a browser-based roguelike auto-battler game named "Among Demons." The author states the game is playable in a browser and includes features such as exploration, demon collection, team building, dungeon crawling, and server-side combat simulation. It was built using JavaScript, Node.js, MySQL, PixiJS, and OpenAI Codex, with development supported by the OpenAI 2026 hackathon.

What changed

The project description indicates that this is an evolution of a pre-existing game, with new features, improvements, and integrations added during a hackathon period using OpenAI Codex. No evidence suggests any prior traction, revenue, or customer base.

The single most important open question

Is there any indication of monetization strategy, user engagement metrics, or plans for growth beyond the solo developer’s scope?

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What The Product Actually Is

  • The description states: “Among Demons is a browser-based roguelike auto-battler.”
  • Players can explore a 101×101 world map.
  • Players capture and collect different demons.
  • Players build teams with distinct roles and abilities.
  • Battles are simulated server-side and replayed visually in the browser.
  • The game includes progression systems such as levels, skills, quests, and collection goals.
  • Public hunter profiles are shareable.

Inference The product is a single-player browser-based game that combines elements of roguelikes, card games, and auto-battlers. It uses deterministic server-side combat with visual replay in the frontend.

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Positioning & Claim Evolution

  • The description states: “Among Demons started from my interest in dark fantasy, creature collection, roguelikes, and automated tactical combat.”
  • The game is positioned as a browser-based roguelike dungeon crawler card game.
  • It emphasizes progression through exploration, demon capture, team building, and risk-taking rather than energy systems or timers.

Inference The positioning reflects a niche interest in dark fantasy and tactical gameplay. There is no evidence of a broader market positioning or brand messaging beyond the author's personal interests.

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Target Customer & ICP

  • Not evidenced.

Finding

No information is provided about target users, personas, or ideal customer profiles (ICP). The description focuses on gameplay features but does not define who plays or would play this game.

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Business Model & Pricing Evidence

  • Not evidenced.

Finding

There is no mention of pricing, monetization strategy, subscriptions, in-app purchases, or any business model. The author does not state whether the game will be free-to-play, paid, or otherwise monetized.

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Technical & Delivery Signals

  • Built with: canvas, CSS3, Express.js, GitHub, HTML5, JavaScript, MySQL, Node.js, OpenAI Codex, PixiJS, responsive design, REST API, server-side.
  • The frontend uses JavaScript and PixiJS for the interactive world map.
  • Combat is resolved via deterministic server-side simulations.
  • OpenAI Codex was used throughout development to inspect code, implement features, refactor, debug, and preserve functionality.

Inference The technical stack suggests a modern web-based game with a focus on performance and scalability. Use of OpenAI Codex indicates an attempt to accelerate development, but no evidence of production deployment or user feedback loops.

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Traction & Maturity Signals

  • Not evidenced.

Finding

No data on downloads, active users, retention, revenue, or customer acquisition is present. The project was submitted to a hackathon and described as evolving from a pre-existing game — no indication of traction or adoption beyond the developer’s own efforts.

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Competitive Context

  • Not evidenced.

Finding

No mention of competitors, market size, or competitive positioning. The description does not reference similar games or platforms in the browser-based roguelike or auto-battler space.

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Open Questions & Risks

  • Solo development: The project is built by one person (Lucian Adrian Rosu), which raises concerns about scalability and long-term maintenance.
  • No monetization strategy: There is no evidence of how the game will generate revenue or sustain itself.
  • Lack of user engagement metrics: Without data on usage, retention, or feedback, it's unclear if the game resonates with players.
  • Unverified claims: All statements are self-reported and unverified; there is no third-party validation.

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Questions the description leaves open

  1. What is your monetization strategy for Among Demons?
  2. How do you plan to scale beyond solo development?
  3. Have you tested the game with real users or gathered feedback?
  4. Are there any plans to integrate social features or community tools?
  5. What are the key performance indicators (KPIs) you track for player engagement?
  6. How do you intend to compete with existing browser-based roguelike or auto-battler games?

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Overall Assessment

  • Not evidenced.

Finding

There is no evidence of any investment interest, partnership discussions, or funding history. The project is described as a solo effort and a hackathon submission — no indication of commercial viability or investor appeal at this stage.

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Source

Submitted to the OpenAI 2026 hackathon on Devpost. Project home on Devpost. Back to the full gallery on Devpost.

This competitive analysis was produced by top-founders.com (opens in a new tab)

Generated by a language model from this project's public Devpost page — its tagline, the author's own write-up and any built-with tags listed there — as captured in August 2026. Short quotations are the author's words. It is an opinion on the idea as a business, not on the people behind it, and it reflects the description as published then. If the project has moved on, request a correction below. The analysis is not independent research and contains no verified traction, revenue or customer data.

An independent guide by KFG International LLC — not affiliated with, endorsed by, or connected to Devpost or OpenAI.

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