Fifth Door is building a generative-AI game engine that converts text prompts into complete, playable games, drastically reducing the time, cost, and technical expertise required in traditional game development. The platform is designed to blur the line between player and creator, enabling user-generated content and highly personalized experiences at scale. Founder Daniel Kan, who previously co-founded autonomous-vehicle company Cruise, envisions a future where anyone can create games for friends, family, or global audiences within minutes. With its technology, small teams or solo creators can tackle projects that once required large studios. The company plans to use newly raised capital to expand its technical team, deepen the engine’s core capabilities, and onboard its first cohorts of creators and development studios. Fifth Door has not yet disclosed launch timing or user metrics, but its $20 million seed financing provides resources to advance product development and initial market entry.

Total raised

$20M

Funding rounds

1

Latest round

Seed

Latest activity

Nov 2025