Oh, Zeta Wing is out! I've been waiting for this one. Sarah's last game, Neutron, was a great little classic style shooter and I'm loving that there are people out there still making new Commodore 64 games who I can throw money at.
Definitely pick this up, don't even stop to think about it! I think I'm going to make a physical cartridge copy and play it that way, but hey - use an emulator if you don't happen to have old computers and EPROMs just lying around!