muntdefems: Dead Synchronicity: Tomorrow Comes Today: GOG offers version 1.0.7 while Steam has version 1.0.12 (no idea what the differences are between those versions). Plus,
on Steam you get the free prequel The Longest Night.
To be fair, the prequel can be downloaded from
the game's website, but still.
Alexim: I don't have the game, but in the card of Dead Synchronicity on GOG is reported that it include a prequel text adventure (Windows) (OS X) (Linux). It seems the same if I'm correct.
You're absolutely right! And the worst part of all is that I do own the game, but I completely failed to see that extra in my backup drive. :S
The question about the version disparity still stands, though. The changelog on GOG doesn't include any useful information, and
the news/updates on Steam are not that informative either...