Marmalade has Lua bindings as well. Maybe a better example would have been Moai (I think that was what I was originally thinking but got my wires crossed).

(There are a number of game engines out there that say "here, write all your stuff in Lua!". I find they're generally a bad fit for the projects I work on because I expect a level of structure in my work environment that is actively difficult to build with any of the ones I've seen. Always looking, though, because rewriting the universe sucks.)