Butterfly64 by uhellstr is a C64 basic demo converted to PICO-8.

We very much like the release notes, so here they are:

Found out about PICO-8 just the other day. Did allot of assembly programming on the C64 in the old good days. Thought I would give this “Fantasy console” a try. Since i never written a line in LUA before I was thrilled over how easy it is to understand the basic idea about programming for this machine. Yesterday I spent abou 5 hours (1 hour on read thru the forums and the manual) and then the rest of the time to write a simple demo for PICO-8. It’s a a convertion of a BASIC demo i wrote in 2010 for the C64.

http://www.lexaloffle.com/bbs/?tid=3793