MarkoH01: Since there are so many quite unknown games maybe it would help if some people could recommend some games from the list. Most of them seem to be hidden gems and to be honest I don't know most of them.
zeogold: Funny, I was just thinking about doing that.
Maybe I will.
Well, let me help by starting with
some recommendations:
Back To The Future The Game: If you are a fan of the movies you cannot really go wrong with this. It is a Telltale games product from a time when they still made real point and click adventures and not just choice based games. The story continues exactly were the last movie ended and you even have Christopher Lloyd in it. Michael J. Fox did only the VO for a small cameo in the last episode but still the voice acting is pretty descent. It is available with German audio as well but the German voices are not the same as in the German versions of the movies and the German audio is also often faulty. So if you want to play this in German I'd recommend using German subtitles instead to not ruin the immersion.
Beatbuddy: Tale of the Guardians: This one I have to recommend because it was developed in my hometwon in Germany ;) No, even though that is true, it's not the reason I would recommend this game. The game is all about music in a nicely drawn underwater world in which you try to collect gems and reach the end of the level. The "try not to get hit" sequences will be interrupted with some logic puzzles in time so that it will not get boring that fast. Every level has different music and this little game is really worth to be checked out.
Cognition Ep 1+2: O.K. I have to confess - I just LOVE Cognition. It is more than a simple point and click adventure and with each episode additional game elements are added to the game. Apart from the changing gameplay the story is just great: suspensful, full of twists and very emotional. Unfortunately only two of 4 episodes are offered here but you may try those to experience the extreme atmosphere the game delivers and the great soundtrack from Robert Holmes (Gabriel Knight) and the credit song sung by his daughter Raleigh Holmes who is also voicing the main character. Cannot wait for Cognition Part II if this should ever happen.
Puzzle Agent / Puzzle Agent 2: If you'll look at screenshots or videos of this game it might seem that there is not much to it but some logic puzzles with simple drawings. But judging the game on its artstyle would be wrong and unfair. If you like movies like Fargo or the TV series Twin Peaks you should really check this out. The gnomes are not what they seem....
Samorost 2; It's Amanita Design, known as some of the most creative developers of flash games (Machinarium, Botanicula) so I don't need to say more. Except maybe that people who want to start from the beginning will be able to play part 1 here for free:
http://amanita-design.net/samorost-1/.