Introduction
The Fallout terminal hacking minigame is a deductive logic puzzle that appears in Fallout 3 (2008), Fallout: New Vegas (2010), Fallout 4 (2015), and Fallout 76 (2018). You face a list of words, all the same length. One of them is the password. You pick a word and the terminal tells you how many letters match the password in the correct position. You get 4 attempts. This tool lets you practice the minigame with five difficulty levels, from 4-letter words to 12-letter words. Pick a difficulty, start a game, and start guessing. Everything runs in your browser.
What this tool does
- Interactive minigame: generates a word list, picks a password, and tracks your guesses against the 4-attempt limit.
- Five difficulty levels: difficulty 1 uses 4-letter words, difficulty 5 uses 12-letter words. Word count scales from 8 to 16.
- Positional feedback: each guess shows how many letters are correct and in the right position, matching the original game mechanic.
- Candidate filtering: after each guess, the tool narrows the remaining word list to words consistent with your feedback.
- Attempt tracking: visual indicators show remaining attempts. The game ends on a correct guess or when attempts run out.
- All game logic runs client-side. No data is sent to any server.
How this tool works
Press "New Game" to generate a word list using the generateFalloutWords function from the terminal library. The function shuffles the word list for the selected difficulty and returns a subset. The password is chosen at random from that subset. When you click a word, the tool calls countCorrectLetters to compare your guess against the password character by character. The result displays as "X/Y correct", where X is the number of matching positions and Y is the word length. After each guess, filterPossibleWords narrows the candidate list by removing words that would not produce the same correct-letter count against your guess. The game ends when you guess the password or exhaust 4 attempts.
How the Fallout terminal hacking minigame works
The terminal hacking minigame debuted in Fallout 3 (2008, Bethesda Game Studios). It replaced the skill-based hacking of earlier Fallout games with a word-based logic puzzle. The Wikipedia article on the Fallout series) traces the franchise from its 1997 origins at Interplay Entertainment through Bethesda's acquisition in 2004. The minigame appears in every mainline Bethesda-era Fallout title: Fallout 3, Fallout: New Vegas (2010, Obsidian Entertainment), Fallout 4 (2015), and Fallout 76 (2018).
The mechanic is simple. The terminal displays a set of words, all the same length. You select one. The terminal reports how many letters in your guess match the password in both character and position. If the password is "SPICKET" and you guess "SOCIETY", the terminal reports 3 out of 7 correct (S, C, E match at positions 0, 2, 4). You use this feedback to eliminate words. If a guess returns 2 correct, any remaining word that shares fewer or more than 2 positional matches with your guess can be ruled out.
The Fallout TV series) premiered on Amazon Prime Video in April 2024. Season 2 premiered December 16, 2025, and ran through February 4, 2026. The season went to New Vegas, connecting the show to the Obsidian-era game. Season 3 has been announced. The TV series has renewed interest in the franchise, including its terminal hacking mechanic. The minigame is a pure logic puzzle with no random elements beyond the initial word selection and password assignment.
How to use this tool
- Select a difficulty level from 1 (Very Easy, 4-letter words) to 5 (Very Hard, 12-letter words).
- Press "New Game" to generate a word list. The password is hidden among the words.
- Click a word to submit it as your guess. The terminal shows how many letters match the password in the correct position.
- Use the feedback to eliminate words. If a guess returns 3/8 correct, any word that does not share exactly 3 positional matches with your guess can be ruled out.
- The candidate list updates after each guess, showing which words remain consistent with all your feedback.
- You have 4 attempts. Guess the password before running out to win. Press "Restart" to play again.
Real-world examples
Narrowing down on difficulty 1
A player starts a game on difficulty 1. The word list shows 8 four-letter words: BONE, CAVE, DOME, FIRE, GAIN, HEAR, ITEM, NOTE. The player guesses CAVE and gets 1/4 correct. This means exactly one letter in CAVE matches the password at the same position. The player can eliminate any word that does not share exactly one positional match with CAVE. For example, DOME shares the E at position 3 with CAVE, giving 1/4, so DOME remains a candidate. BONE shares the E at position 3, so it also stays.
Solving on difficulty 3
On difficulty 3, the word list contains 12 eight-letter words. The player guesses COMPUTER and gets 4/8 correct. The candidate filter removes words that do not share exactly 4 positional matches with COMPUTER. The remaining list shrinks. The player picks REACTOR from the filtered list and gets 6/8 correct. Two more candidates remain. The player picks the one that is consistent with both guesses and wins on the third attempt.
Running out of attempts
A player on difficulty 5 faces 16 twelve-letter words. They guess ACCELERATION and get 2/12 correct. On the second guess they pick BIOLOGICAL and get 0/12 correct. The candidate list is still large. They guess CONSTRUCTION and get 3/12 correct. On the fourth attempt they pick from the remaining candidates but miss. The terminal locks out and reveals the password was TRANSMISSION. The player presses Restart to try again.
Comparison with similar methods
| Method | Complexity | Typical use |
|---|---|---|
| Fallout terminal hacking | Deductive logic | Fallout games, logic puzzle practice |
| Mastermind | Deductive logic with colors | Board game, code-breaking practice |
| Codenames | Word association | Party game, team-based word clues |
| Morse code | Pattern memorization | Signal encoding, amateur radio |
Limitations or considerations
This tool simulates the Fallout terminal hacking minigame but does not include every feature from the original game. The original minigame includes dud removal brackets and allowance replenishing, which this tool does not implement. The word lists are fixed per difficulty level rather than procedurally generated. The candidate filter is a helper that narrows the list logically, but the original game does not show this filter. The tool is a practice aid for understanding the deductive logic behind the minigame. For other puzzle tools, try the Mastermind solver, the Codenames analyzer, the Morse code translator, or the BioShock Morse decoder.
Frequently asked questions
Which Fallout games include the terminal hacking minigame?
The terminal hacking minigame appears in Fallout 3 (2008), Fallout: New Vegas (2010), Fallout 4 (2015), and Fallout 76 (2018). All four were developed or published by Bethesda. The minigame replaced the skill-based hacking system from the original Interplay-era Fallout games. Obsidian Entertainment developed New Vegas while Bethesda published it.
How does the correct-letter count work?
When you guess a word, the terminal counts how many letters in your guess match the password at the same position. If the password is REACTOR and you guess READER, the terminal reports 4/7 correct. R, E, A, R match at positions 0, 1, 2, 6. The other positions do not match. This count includes only positional matches, not letters that appear in the password but at a different position.
What is the best strategy for the minigame?
Pick a first word that shares letters with many other words in the list. Use the feedback to eliminate candidates. After each guess, filter the remaining words to those that would produce the same correct-letter count against your guess. This narrows the list quickly. With 4 attempts, you can usually solve difficulty 1 and 2 with careful filtering. Higher difficulties require more luck on the first guess.
Does the Fallout TV series feature terminal hacking?
The Fallout TV series on Amazon Prime Video premiered in April 2024. Season 2 premiered December 16, 2025, and ran through February 4, 2026. The season went to New Vegas. Season 3 has been announced. The show draws from the game universe but focuses on character-driven storytelling rather than gameplay mechanics like terminal hacking.
Are the word lists in this tool the same as in the games?
The word lists in this tool are custom-built for each difficulty level. They are not extracted from the game files. The original Fallout games use larger word lists that vary by terminal. This tool provides a representative sample of words at each difficulty level for practice purposes. The mechanic is identical: same-length words, positional matching, 4 attempts.
Conclusion
The Fallout terminal hacking tool lets you practice the deductive logic puzzle from Fallout 3, New Vegas, Fallout 4, and Fallout 76. Pick a difficulty, start a game, and use positional feedback to narrow down the password. For more puzzle tools, try the Mastermind solver, the Codenames analyzer, the Morse code translator, or the BioShock Morse decoder.