Gacela is an extension of the Lisp programming language to develop games quickly and reliably. Its name comes from GCL (GNU Common Lisp), which is the official implementation of Lisp for the GNU project. I don't want to say only that Gacela is based in GCL, but it is fully identified with the ideas of the GNU project. And, at the same time, I try to convey the idea that Gacela can be used to program games in a fast and intuitive way (Gacela is the spanish word for Gazelle).
Gacela works internally with SDL and OpenGL. Current version only allows graphical programming (without sound) and a somewhat elementary, but for now the memory management works quite well. With Gacela programmer does not care to allocate and free memory; language will make allocations when it's necessary and will free memory when it's no longer needed.