
Fifth Door
Create and play games with AI
Fifth Door unlocks the power of imagination by making it easy for everyone to create, share, and play games anywhere, with anyone. We exist to stimulate the creativity, connection, and joy that people get when they play games.
- Website
- fifthdoor.com
- City
- San Francisco
- Country
- United States
- YC batch
- Fall 2025
- Team
- 3 people
- Stage
- Early stage
- AI-native
- Yes
- Hiring
- Open roles
More AI & models in San Francisco

AnthropicLab$965bnMafia
Safety-focused lab building the Claude models.
OpenAILab$852bn
Frontier model lab behind GPT and ChatGPT.

Cognition AI$48bn
Artificial Intelligence. Valued at $48bn (September 2026).

Scale AI$29bnHiring
Data-centric infrastructure to accelerate the development of AI
Perplexity$20bnMafia
Answer engine that cites its sources.

Faire$12.6bnHiring
The global online platform empowering independent retail.
Claim this profile
Free and instant: prove you run fifthdoor.com and edit the profile yourself.
- Your logo, office address and founder photos
- The ✓ Verified mark next to Fifth Door across the site
- Open roles listed on the Hiring board
- A followed link back to your website
A rank card with Fifth Door's standing on Labspie, or a simple badge. Both link to this profile and update themselves.