Cranberry Production GmbH is a German software company specializing in video-game development, located in Hanover. It is a subsidiary of dtp entertainment, an independent video games publisher based in Hamburg.
Cranberry Production is a continuation of 4HEAD Studios, a Hanover-based game development company founded in 1997 by Lars Martensen and Tobias Severin. 4HEAD is perhaps best known for a successful series of medieval-life simulation games known as The Guild: see Europa 1400: The Guild and The Guild 2.
Source: Wikipedia, "Cranberry Production," available under the CC-BY-SA License.