Hi there! LÖVE is an *awesome* framework you can use to make 2D games in Lua. It’s free, open-source, and works on Windows, Mac OS X and Linux.
I read about Löve a couple of years ago — it’s a cool game engine written in Lua, a language I’ve always wanted to learn. Today I came back to it after reading about Mari0 (http://stabyourself.net/mari0/), a mashup of Mario with Portal.