Daedalic, the German adventure game developer, will soon see their games in English thanks to Lace Mamba Global, who will be releasing them in the UK.
Edna & Harvey: The Breakout is a comedy adventure game featuring a girl named Edna who has to escape a mental facility with the help of her talking stuffed bunny Harvey. This game has already been released in Germany, and has received critical acclaim. I've wanted to play this for a while now, since I've heard nothing but good things about it.
The other games are more serious in nature:
A New Beginning is an upcoming adventure game that takes place in 2500, when the Earth is facing extinction due to global warming. A woman named Fay is sent back to the year 2008, in an effort to prevent the disaster from happening. Her task is not easy, as she faces opposition from an oil tycoon who will stop at nothing to prevent clean fuel sources from becoming mainstream.
Deponia is an upcoming adventure game that features a man named Rufus who lives on a village made of trash. He dreams of a better life, and plans to trick a woman in order to get that life when he learns he looks just like her husband.