Good to see the game arrived keropi
Heirs To The Throne (Erben des Throns) from 1992 PC version
Click for big picture
This CD Edition is from 1993 and is basically the same as the disk version I believe.
The game includes a series of gameplay options to modify and create your own game modes. You can select the size of the kingdom, the amount of territory to be explored, the chances of random events, and there's even an option that makes the game a race against the clock as you try to get the kingdom before the rightful heir returns. Includes hot-seat multiplayer support for up to 4 players. It was also released on the Amiga in 1992 but it seems the english version is MIA but the german version is common.