Si tratta di un wargame ambientato in epoca napoleonica, che ripropone le battaglie di Jena e Eylau.
Prussia 20 features two complete games covering key battles fought in Central Europe during the 1806-1807 War of the Fourth Coalition: Jena 20 2nd Edition, and Eylau 20! Jena 20 2nd Edition (October, 1806) highlights the stunning French victory which shattered the vaunted Prussian army at the twin battles of Jena and Auerstadt. With the Prussians realizing they have already been out maneuvered, their army is desperately trying to re-position itself while the French attempt to encircle and destroy them. Can the Prussian rear guard under Hohenlohe hold off Napoleon's Grand Armée long enough at Jean to allow Brunswick's main body to crush Davout's lone French corps under which blocks their path to safety, or will the "Iron Marshal's" veteran 3rd Corps stand firm against three times their numbers and seal the Prussian's doom? The fate of two great empires is yours to decide. Fought in some of the most severe weather conditions imaginable, the confused and indecisive battle of Eylau 20! (February, 1807) stands as a testament to the misery and horror of warfare. In the dead of winter, Russian General Levin August von Bennigsen halted his exhausted army at a small deserted crossroads village and prepared to give battle. For two days, in sub-zero temperatures with heavy snow falling almost continuously, Napoleon's troops battered themselves against the unyielding Russian lines to little avail. Is the historical bloody and inconclusive draw the most likely outcome, or can you do better than the actual commanders and manage to eke out a victory in the terrible "Battle in a Blizzard?"
- Prussia 20