blakstar: Well, that's very strange -- I just checked on the Steam page for Anna, and it says it requires a Kalypso account.
However, I fired it up on Steam under Linux without registering with Kalypso at all -- didn't even know that registration was required!
Hmm, well given that Linux support on Steam is relatively recent it's possible that by the time they added the Linux versions they'd decided to remove the third party DRM. I think it released on Desura later too, maybe that's why it's DRM-free there.
teabow: More like "Ugh, another mainly Windows and Steam one" ! What about Mac and Linux gamers ?
A perfectly valid criticism, just one that doesn't affect me which is why I didn't mention it. I think it'd be a bit much to complain about the lack of Linux and Mac support when I don't use either. :P