Punished_Snake: Anna requires a Kalypso account to run, at least on Steam.
IAmSinistar: Found a post in the Desura comments from GOG member
m0p:
May 2 2013, 8:27pm replied: Then definitely buy it from here, just launched the Extended Edition and I can confirm it's still DRM-free, no Kalypso accounts or otherwise. So it should be free and clear.
Good to hear, I think Anna was rejected, and the dev said something like they used their early game build.
Now that its fleshed out a bit more, maybe they will re-submit it, and let it get approved.
Link to wishlist
http://www.gog.com/wishlist/games/anna