This is the core rules box for the Perry Rhodan RPG by Agema-Verlag published in 1993.
The box contains the core rulebook with everything necessary to create characters in the Rhodan-universe, equipment, attribute, abilities, character development and how to play.
Also included are a scenario called "Auftraggeber: Solare Abwehr" ("Client: Solar Counterintelligence"), a source book "Das Solare Imperium" ("The Solar Empire"), floorplans for the scenario, counters, dice and character sheets.