"XONG is a fast-moving procedurally-generated puzzle game for Linux, Mac OSX, and Microsoft Windows. XONG is for one player using a keyboard and mouse.
XONG is pronounced "zong" and programmed entirely in Common Lisp."
If you can't find anything worth running, you're only looking at very common mainstream applications, however I've seen some which had a lisp embedded or even had large parts of them written in Lisp, however it's usually not advertised, but someone who knows where to look and can read some x86 asm can easily find out...