Baszucki: Generalizable Lua API Drove Roblox's UGC Engine
David Baszucki · Make Better Decisions by Fixing Yourself First · Aug 18, 2026 · at 26:20
Roblox co-founder and CEO David Baszucki discusses early architectural decisions with late co-founder Eric Cassel regarding game engine design.
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“Eric was very different. It's like, whoa, whoa, whoa, don't do that. Like, we need to interface a language with this thing. We need an API. We need to have this thing be very generalizable. There's a game creation language called Lua. Let's connect that up and don't do any of this stuff. And it's weird that I was initially like, well, I don't know if I trust that, but we started doing that. The power was just absolutely enormous, you know, rather than my hard coded stuff. The power of this generalizable thing that, that, that was kind of like a core engineering foundation that gave Roblox a lot of its UGC boost in a way.”
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