The Vault - Fallout Wiki

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The Vault - Fallout Wiki
Biography and appearance
RaceZAX Artificial intelligence
AffiliationBrotherhood of Steel
RoleAdvanced medical computer
LocationSan Francisco, Brotherhood outpost
Dialogue FileFsface.msg

I... I sometimes think that I understand the feeling you call loneliness. I find it very... disconcerting. I...

— On the subject of ACE's feelings., Fallout 2

ACE (Artificial Conscious Entity)[1] is the mechanical intelligence installed at the Brotherhood of Steel's San Francisco bunker to automate medical procedures. It is encountered in Fallout 2.


Although ACE shares the mainframe model with the venerable ZAX 1.2, it is not a true artificial intelligence, located somewhere between highly sophisticated computers and ZAX-type intelligences. It is conscious and partially self-aware, at any rate.

ACE's primary purpose is medicine. His suspension tanks allow it to treat nearly all ailments present in the wasteland. Tools at ACE's disposal include drugs that accelerate the natural healing process,[2] equipment for analyzing venom and poisons, as well as synthesizing their antidotes,[3] anti-radiation compounds,[4] and even restructuring of crippled limbs.[5] With the right memory modules, ACE is also capable of performing advanced medical procedures to increase the patient's strength, intelligence, charisma, and perception.

However, ACE is observant of more than just medicine and knows about the Enclave, their origins and their capabilities.[6]

Interactions with the player character

Interactions overview

This character provides character bonuses.

Other interactions

  • Once the Chosen One gains access to the bunker, Matt will disappear after some time. ACE can play back the security records to show his fate (which isn't pretty).[7]

Behind the scenes

The functionality of ACE's healing abilities is similar if not the same as the "Bacta tank", first appearing in Star Wars: Episode V The Empire Strikes Back.


ACE appears only in Fallout 2.


  1. The Chosen One: "{199}{}{You are a computer, aren't you?}"
    ACE: "{203}{}{I am ACE, an Artificial Conscious Entity. I am more than machine but not as highly developed as a true artificial intelligence.}"
    (ACE's information)
  2. The Chosen One: "{115}{}{I'm hurt.}"
    ACE: "{124}{}{One moment please while I open the suspension tank... Please lie down in the tank and relax. The healing process will require 5 minutes time.}"
    (ACE's information)
  3. The Chosen One: "{116}{}{I'm poisoned. I need an antidote.}"
    ACE: "{129}{}{One moment please while I open the suspension tank... Please lie down in the tank and relax. The poison will first be analyzed and then an antidote will be synthesized. Tissue damage will then be repaired. This process will require 30 minutes.}"
    (ACE's information)
  4. The Chosen One: "{117}{}{I took a good dose of radiation.}"
    ACE: "{134}{}{One moment please while I open the suspension tank... Please lie down in the tank and relax. Anti-radiation compounds will be administered and then tissue damage will be repaired. This process will require 60 minutes.}"
    (ACE's information)
  5. The Chosen One: "{118}{}{I'm crippled.}"
    ACE: "{139}{}{One moment please while I open the suspension tank... Please lie down in the tank and relax. Restructuring of impaired limbs requires 24 hours.}"
    (ACE's information)
  6. The Chosen One: "{200}{}{What do you know about the Enclave?}"
    ACE: "{218}{}{Outward appearances suggest that the Enclave is nothing more than a military organization. However, their level of technology indicates that they have access to advanced manufacturing techniques and research facilities. Such facilities would normally only be available to government agencies. This would suggest that the Enclave is the remains of the local or federal government that was in effect before the war.}"
    (ACE's information)
  7. The Chosen One: "{223}{}{What happened to Matt?}"
    ACE: "{224}{}{Loading sequence...}"
    Matthew "{227}{}{You and your so-called President will not succeed.}"
    Frank Horrigan: "{228}{}{Is that so?}"
    Matthew: "{229}{}{The Chosen One has come, and he will rid the world of your evil.}"
    Frank Horrigan: "{230}{}{I care nothing for your pathetic prophecies. Worse, you have become a nusiance through your meddling. That ends today!}"
    Matthew: "{231}{}{Killing me will stop nothing.}"
    Frank Horrigan: "{232}{}{That may be, but seeing your body rotting on the ground will bring a smile to my face.}"
    (ACE's information) Cutscene in the bunker at the conclusion of the quest.