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Published · transcript-backed

Tim Sweeney: belief

30 Apr 2025 Lex Fridman Podcast #467 – Tim Sweeney: Fortnite, Unreal Engine, and the Future of Gaming

“I would say probably 60 hours a week of programming, five hours a week of coordinating with other people and iterating and sitting down with them and looking at what’s going on on screen and figuring out what they needed.”

— Tim Sweeney

Source trail

Everything needed to verify it.

Speaker
Tim Sweeney
Attribution
Verified speaker
Claim type
belief
Recorded
30 Apr 2025
Publisher
Lex Fridman Podcast

Transcript context

…Nice. And I didn’t have anything else going on in my life so it was really just work and sleep and occasional eating. I found I always needed eight or nine hours of sleep a night. Without good sleep, I would just become a zombie and wouldn’t be nearly at my best. So I always needed to get sleep. But I didn’t need anything else going on. The programming itself was so energizing and enthralling. So it was three and a half years of that during the project. Mostly spent programming. I would say probably 60 hours a week of programming, five hours a week of coordinating with other people and iterating and sitting down with them and looking at what’s going on on screen and figuring out what they needed. Maybe five hours of business stuff. And there was a good division of labor then. Didn’t have a big executive team, but it was basically myself running the techno and development part of the company and Mark Rein running the business part of it, doing deals and maxing out his credit card and going around the world bringing in sources of revenue to keep the company funded. What programming language are we talking about? C? You mentioned there’s this pile of assembly. What was your decision in choosing the programming language that Unreal Engine would be written in?…

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