The year is 2184 The following year saw the massive attack on the Citadel led by rogue Specter Saren Arterius. Followed by the death of Commander Shepard.

The story so far: (List of events from Mass Effect 1)
Commander Shepard convinces Urdnot Wrex to destroy Saren’s Genophage cure on Virmire.
The original Citadel Council was saved during the battle between Council forces and Sovereign.
David Anderson was nominated to be the first Human Council member by Commander Shepard.

System notes:
This Campaign utilizes a classless generation system based on D20. Where players can select feats and skills based on generation points. New species modifiers will be listed in the wiki.

Mass Effect: The Gap