Hallucinate
Massively Multiplayer Online Rave
Last verified:
What is Hallucinate?
Hallucinate is a Massively Multiplayer Online Rave (MMOR) that drops users into a low-poly 3D virtual club where they can dance with real other users to looping DJ sets sourced from YouTube. Built by solo developer stagas and released under the MIT license, the tool requires no account, no password, no login, and no credit card—just a browser tab to join hundreds of anonymous players dancing in real time.
Key features include a dead-reckoning, client-authoritative architecture that syncs only key state changes to keep the experience smooth across hundreds of players without overloading the server. The platform is written almost entirely in TypeScript and features a shared 3D music visualizer that runs directly in your browser. AVatars move in real time as users dance together to the music.
Hallucinate is designed for anyone looking for a fun, social online music experience without friction—no sign-up barriers, no ads, and no enterprise tiers. It appeals to people seeking casual multiplayer interaction, music lovers who want to experience DJ sets with others, and those curious about lightweight browser-based 3D virtual spaces. The source code is publicly available on GitHub.
The tool went viral on Hacker News where it received approximately 438 upvotes and 188 comments, with one user remarking they had "more fun here than doing anything online for years." As of recent writing, it has around 144 GitHub stars.
Hallucinate pricing
Pricing model: Freemium
Hallucinate is completely free to use with no paid plans. There is no enterprise tier, no credit card required, no account needed, and no subscription model. The tool is open source under the MIT license with source code available on GitHub.
Hallucinate pros
- No login required to use
- No account creation needed
- No password required
- No credit card required
- Completely free to use
- No ads on the platform
- Open source under MIT license
- Browser-based, no installation needed
- Real-time multiplayer with hundreds of users
- Low-poly 3D club environment
- YouTube-sourced DJ sets
- Smooth performance with dead-reckoning architecture
- Lightweight TypeScript codebase
- Anonymous avatar interaction
- Viral success on Hacker News with 438 upvotes
Hallucinate cons
- Named confusingly like an AI hallucination detector tool
- No enterprise tier or paid features available
- Limited to browser-based experience only
- Low-poly graphics may not appeal to everyone
- Looping DJ sets rather than live performances
- No persistence of user identity or progress
- Solo-developed with only 144 GitHub stars
- No custom music upload feature
Frequently asked questions about Hallucinate
What is Hallucinate?
Hallucinate is a Massively Multiplayer Online Rave where you open a browser tab and are deposited into a low-poly 3D club surrounded by real users dancing to looping DJ sets sourced from YouTube. It requires no login, no account, and no credit card.
Do I need to create an account to use Hallucinate?
No, Hallucinate requires no account, no password, and no login. You can join immediately with just a browser.
Is Hallucinate free?
Yes, Hallucinate is completely free with no paid plans, no enterprise tier, and no credit card required. It is open source under the MIT license.
Who built Hallucinate?
Hallucinate was built by a solo developer named stagas. It was written almost entirely in TypeScript and released as Show HN on Hacker News.
How many people can be in Hallucinate at once?
Hallucinate supports hundreds of players simultaneously. The dead-reckoning, client-authoritative architecture syncs only key state changes to keep things smooth without overloading the server.
Does Hallucinate have ads?
No, Hallucinate has no ads involved. The platform is completely ad-free.
Where can I find the source code?
The source code is available on GitHub at github.com/stagas/hallucinate under the MIT license.
What music does Hallucinate play?
Hallucinate features looping DJ sets that source videos from YouTube. The music plays in the 3D club environment as users dance with their avatars.
Do I need to install anything to use Hallucinate?
No installation is needed. Hallucinate runs directly in your browser as a web-based 3D experience.
Is Hallucinate an AI hallucination detector?
No, despite its name, Hallucinate is not an AI hallucination detection tool. It does not check if LLMs are making things up, compute faithfulness scores, or flag grounding failures. It is a multiplayer online rave that induces a different kind of hallucination through its immersive virtual club experience.