Oh my god! On my top-10 list of the games I enjoyed the most, ever, I think this would be number 1. This one is an oldy but a goodie. I fininshed it many times in the good old days. It was only on PC but now some nice guys ported it to the mac. You can download it totally free here: http://sc2.sourceforge.net/downloads.html You can play it in window mode too. ^_^ Looks like the prject dates back to almost 2 years ago but I just found out.