For the first time, Sonic, & other SEGA All-Stars are coming to the Mac this summer! SEGA Superstars, & Sonic & SEGA All-Stars Racing will be available soon for Mac users. Details are in the SEGA Blog post, which is the link below.

Link:
http://blogs.sega.com/2012/06/20/sonic-the-hedgehog-and-the-sega-all-stars-come-to-the-mac-for-the-first-time/