Matt Brandwein

@brandwein.social

co-founder of @hiddendoor.co • formerly head of product for data science/machine learning at Cloudera • he/him

You can create your own interactive worlds in Hidden Door, starting...now. Meet Atlas, our new studio for worldbuilders. Play with your friends, engage with your fans, and join our revenue share to earn money from your playable world. Happy playing!

Build a playable world. All you need is an idea. Atlas, from Hidden Door.
Are you a daydreamer? A world-builder? Full of ideas? Our new tool, Atlas, enables you to design an interactive world. You don’t need to know how to code. You don't need any publishing experience. You do need an idea! (We’re certain you have a lot of great ones.) Oh, also. Do you like making money?
We believe that writers and artists should get paid (We believe this because it’s indisputably true). Platforms should be designed so creative people share in the value they create. So, we’re launching a revenue share program for world creators. That means 30% of all subscription revenue goes straight back to the people building worlds. 

Start building worlds right now at hiddendoor.co. Or go explore our world catalog, and discover what authors, filmmakers, designers, comedians, musicians, and other creative humans like you are building. Use the code STORYMODE by May 31st and receive 25% off for your first year.

If nothing else, #GDC has shown me that there's a huge need for support for how to make games that use LLM in the loop fast and scalable. And very few folks have real and transferrable experience doing this.

GM: Charisma check. Mamdani: [rolls natural 20] GM: that’s a d6 how did you Mamdani: [direct to camera] Did you know you can check out board games at your local public library? 😊

Hidden Door is heading to the stars! This month, we're unveiling a new slate of science fiction adaptations. Each world is a doorway into a different kind of future - from mind-linked revolutionaries to lonely androids and wisecracking aliens.

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Our art team takes time to do research whenever we add a new era of fashion to our avatar outfit choices. Here’s a peek at some of our references we used to inspire our recent Regency Era looks for Pride & Prejudice.   Sign up for the waitlist to play and see them all!

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We had a ton of fun at the Toronto International Film Festival! Highlights were the AI on the Lot popup on Saturday, meeting with partners, and folks making the films we love.

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I'm so excited that Hidden Door is out in the world today! We're thrilled to launch our roleplay meets fanfic platform, where we are making the tech, game, and biz in sync to let us all share more of the worlds we love, while rewarding the brilliant writers we admire. Check it out at hiddendoor.co

A photograph of a neon sign of the Hidden Door Narrator, against a black wall. There is a croissant on a plinth in front of her, as if an offering, and a large white candle next to her.
Hidden Door@hiddendoor.co · 12mo ago

We’re launching early access 🔥today🔥! Hidden Door is where roleplaying meets fanfic. Rise from the beyond to wreak vengeance in The Crow, go rivals-to-lovers in Pride & Prejudice, lean into after-dark vibes with Courtship & Crimson, and so many more!

In secluded tavern corners, the rumours begin to spread… Roguelike Celebration calls for brave adventurers once more! We're putting out the call for speakers for this year’s Roguelike Celebration on Oct 25th and 26th! Submissions are open until June 30th: forms.gle/xcJjpvJybkss...

Roguelike Celebration 2025 Call for Proposals

Give a digital talk at the Roguelike Celebration on October 25th-26th 2025! Event info: https://roguelike.club/. We'll be hosting an online livestream during the Celebration. You'll have the option o...

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