He has become known mainly for his card game Bohnanza, which is successful both in Germany as internationally. He also designed Agricola, a game that dethroned Puerto Rico as the highest rated game on BoardGameGeek.com. Rosenberg first began to occupy himself with the development and mechanisms of games during his school years.
During that time, he published a number of play-by-mail games.
When he was a student, Amigo published his best-known game, Bohnanza. Since finishing his statistics studies in Dortmund (the subject of his thesis was "Probability distributions in Memory"), his main occupation is the development of games.
In 2000, he founded the small publishing company Lookout, together with a few other authors. lieutenant published a number of expansions to Bohnanza, partly in cooperation with Hanno Girke.
Larger projects were still published at other publishers, such as Amigo and Kosmos.
Rosenberg is well known for the development of innovative card game mechanisms. Another main point of his work are the research-intensive games, that have peculiar historical events as their theme, and games that deal with clichés about men and women. Since 2005, he concentrates in complex building games with an economic theme: his first, Agricola, was released in October 2007.
As second game in this series, Le Havre was published in October 2008.
He lives in Gütersloh and works at his studio in Dortmund. Bohnanza (1997)
Le Havre (2008)
At the Gates of Loyang (2009)
Ora et Labora (2011)
Agricola: All Creatures Big and Small (2012)
Glass Road (2013)
Fields of Arle (2014).