Citadel is kind of an optional fun way to meet all the companions from all the previous games again in ME3 and say goodbye as you approach the ending of the trilogy.
In story terms Leviathan is far mroe important imo, it explains a lot about the lore of the universe.
For ME2, consider Lair of the Shadow Broker because it just offers a whole lot; and Arrival because if ties into the start of ME3.
ME1 doesn't really have any super-essential DLC story-wise imo.
In story terms Leviathan is far mroe important imo, it explains a lot about the lore of the universe.
For ME2, consider Lair of the Shadow Broker because it just offers a whole lot; and Arrival because if ties into the start of ME3.
ME1 doesn't really have any super-essential DLC story-wise imo.