Mass Effect 3: All Main Missions List

mass effect 3 all main missions

If you’ve made it this far into the trilogy, you should know that Mass Effect games contain long lists of missions, both optional and mandatory. Though, you probably just want to know which ones really need to be completed to get to the end of the game. That’s what we’re here for. Here’s a list of all main missions in Mass Effect 3.

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Spoiler Warning: Please keep in mind that the names of some of the main missions can hint at some of the story beats in Mass Effect 3.

All Main Missions in Mass Effect 3

Mass Effect 3 is split into three acts, just like Mass Effect 2. And in true Mass Effect fashion, many of the missions in each act can be completed in whichever order that players see fit. However, this list is a bit more straightforward than the ones for the previous games.

There’s a sense of urgency in the plot this time around, with players attempting to assemble an army of different races. Almost every main mission will be labeled with “Priority” followed by the location that the mission takes place in.

  1. Prologue: Earth
  2. Priority Mars
  3. Priority The Citadel I
  4. Priority: Palaven
  5. Priority: Sur’Kesh
  6. Attican Traverse: Krogan Team OR Attican Traverse: The Rachni
  7. Priority: Tuchanka
  8. Priority: The Citadel II
  9. Priority: Perseus Veil
  10. Priority: Geth Dreadnought
  11. Rannoch: Admiral Koris
  12. Rannoch: Geth Fighter Squadrons
  13. Priority: Rannoch
  14. Priority: The Citadel III
  15. Priority: Thessia
  16. Priority: Horizon
  17. Priority: Cerberus Headquarters
  18. Priority: Earth

That’s the full list of every single main mission in Mass Effect 3. The list doesn’t look too long but, rest assured, this one will keep you occupied for hours. If you’re looking to find more tips, tricks, be sure to check out our guide wiki for Mass Effect Legendary Edition. You can also have a look at the related articles below to see more of our Mass Effect coverage.


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Ethan Anderson
Ethan was formerly Deputy Guides Editor at Twinfinite, having worked at the site from 2019 to 2022. A lover of anime, RPGs and all things Genshin Impact, Apex Legends, Zelda, Pokémon, Dragon Age, or Tales related. He can usually be found either struggling/failing to get 100% completions, or praying for a Jak 4.