Harmonix Music Systems uses a bespoke Lisp-ish language for their game scripting that we call DataArray (or DTA for short) in the Guitar Hero II modding communi

Harmonix Music Systems uses a bespoke Lisp-ish language for their game scripting that we call DataArray (or DTA for short) in the Guitar Hero II modding community. It's very powerful to be able to put script in almost any place where a variable or constant is used.