Edit 2:

If you entered the giveaways, check their description again for some surpsises. :3

The first Deponia game has been a freebie, has been bundled to death, and now it is at a 90% discount on Steam this week. Therefore, a ton of people have it—but not its sequels.

Additionally, I never had anyone on my whitelist, therefore I never made any whitelist giveaways before. So, I am making a one-time exception and try to find a few good people who already finished the first Deponia and would like to get some more.

The rules are simple. If you finished Deponia before, link me your personal achievements page (looks like this: steamcommunity.com/id/<Steam_ID>/stats/Deponia/?tab=achievements) showing a credible play time and that you have unlocked the achievement called 'Hussa - The Chorus-Guys Rule!' before 2017-03-07 23:59:59 UTC and I'll add you to my whitelist, after which you should immediately see the two currently running giveaways: one for Chaos on Deponia, one for Goodbye Deponia.

If you haven't finished the game yet, then you can also jump on this wagon if you start playing now. The giveaways last until March 20, so you have ample time to get to the end.
There is a catch though: since play time and achievements are easy to fake, I'll only add you if your "chronicle" your play through. Keeping a "journal" through screenshots is enough, but it has to be a constant and regular series of pictures. You'd also have to start from the beginning, even if you almost finished the game before.

The giveaways last until 2017-03-20 18:00:00 UTC and I accept entries six hours before it runs out, so noon that day, universal time (or Greenwich Mean Time, if it is easier to convert). It should be fair enough.

Oh, also, one last thing: after the games are activated and marked, I'll empty that whitelist. Just so you don't get surprised if you end up on it.