You may have seen the original version of this program, which was called Mac Maya.
This program is a complete rewrite of that program, OK? But this is a more powerful program, especially since it contains all of the features a serious researcher could want, plus a better user interface and better graphics.
In other words, it's a much more powerful - and much more impressive - program.
The Readme tells you some things that you might want to know about this program, and provides some interesting tidbits about the Maya calendar.
This is a fat binary and runs on 68k and PPC Macs. You need System 7. It needs 348k of RAM but 1mg is recommend.