In Fallen Empire, players take on the role of heroes or scoundrels (the line isn't always clear) in an alternate reality version of Europe ca. 500 AD. The (western) Roman Empire has fallen and various Germanic tribes have overrun most of the areas it used to control. The world is in chaos and the miracles of the Roman world are sinking into legends, even while the ruins of the old world remind of glory past.

The world is our world in history, except that all the superstitions and tales of witchcraft and miracles are true. There are Banshees in the night and werewolves in the forests, and a prayer can be answered or a magic spell save the day.

In this world, the characters of the players are working together to find their way and pursue their dreams, or run from their nightmares. And with time they will discover that there is more at stake than just their lives.

Fallen Empire has a fast, fiction-focussed action resolution system based on the award winning Blades in the Dark ruleset.
It also has a unique character creation system that allows you to literally start playing within one minute of sitting down, while still allowing you to build your character with complete freedom.
And it has a free-form magic system that unlocks the creativity of players and fits seamlessly into the fiction of the game.