Dulce et Decorum

From the introduction:

Dulce et Decorum uses ensemble play, storytelling and story game techniques to support immersive character drama. Through collaborative storytelling, the group builds up the reality of war and life on the front and uses that to pressure the characters. A simple mechanical system shapes and follows the fiction. The players wield the tools of the game – cold facts and authentic trench poetry.

User summary:

The game requires the use of a standard pack of French playing cards. In addition sources of poetry are suggested (some poem are provided) and certain music songs are suggested.