I got started with programming on a commodore 64 and after not realizing there was an easier way to do it than machine language, moved on to using a c-64 fig forth implementation for writing video games called White Lightning (
http://www.crashonline.org.uk/08/whitelig.htm ).
Ah, nostalgia.
edit: that link is to a non c-64 version. couldn't find anything on the c-64 version in my lazy search.