Die Demo zu Rise of Prussia enthält nicht nur die englische Sprachversion, sondern auch die deutsche! 
Englische Demo zum historischen Strategiespiel Rise of Prussia (Videos)
Content:
-All three tutorials: Basics, Army Command, Advanced Tutorial
-Invasion of Saxony Scenario
-First 12 turns of the big campaign (1757-1764)
Limitations in the demo:
You can't continue past the turns allowed (contrary to the full game)
Elements recover hits but can't be recreated completely when destroyed (you need replacements for either operations)
The National Morale can never drops below 100 (but can raise much higher)
And that's it, basically, almost as the full game within the context of the demo scenarios (and these limitations should not prevent you from enjoying the demo).
Changes 1.00 > 1.01a:
The third tutorial had a bug preventing the process of the first turn.
Not using his desktop resolution would prevent the Army Outliner to be displayed correctly.
In the campaign, the Saxony Surrender and Austrian Reinforcements events have been overhauled completely.
System Requirements
Operating system: Windows XP/Vista/ Windows 7 (Does not support 98 or 2000)
Processor: Pentium IV 1800+ MHz
Memory: 1024 Mo RAM
Hard disk space: 2Gb free on hard disk
Video: 128 Mo DirectX 9.0c
Sound: DirectX 9.0c compatible sound card
DirectX: DirectX 9.0c or more
Controller support: 3-button mouse, keyboard and speakers
Special multiplayer requirements: Internet Connection for multiplayer
Multiplayer restriction: Play-by-Email only (Demo allows PBEM)