Impaler26: Eador: Masters of the Broken World
Outdated version 1.4.3.
The newest version is 1.4.4 (available on Steam since June 19th).
The autoupdater will get you patched up to the latest version :)
Mutant Mudds - it looks like GOG version is NOT the deluxe edition. The game should be added to the list.
Eador, VVVVVV - Are these updates fresh? Maybe you should give some time first? However, if time passes (at least few weeks) and the update is not present on GOG, but it adds new content and/or fixes major bugs, then the game should be added to the list.
VVVVVV has been updated today for both Mac and PC :)