Thank you so much for playing! Godot was used for this one; all the GI is baked into lightmaps, and probes + dynamic lighting for the stuff that moves, which is how I was able to get it to run in the browser. Not exactly a one-click solution for photorealistic lighting, but with a bit of finesse it runs really well!
Viewing post in Run it Back jam comments
https://bsky.app/profile/passivestar.bsky.social Check out Passivestar on Bluesky and their website https://passivestar.xyz/. They talk a ton about how to achieve realistic and performant lighting in Godot. You can trust them because they were (partially) responsible for adding features like this to the engine!