Talks to Watch

I Built a COMPUTER in Magic: The Gathering

2M views · Oct 31, 2019 · 22:54 · 3 HN recommenders · 4 mentions · discussed 2019–2026

Kyle Hill of Because Science explains and demonstrates, using real cards, how Magic: The Gathering can be used to build a Turing machine, a computer inside the card game.

Why Hacker News points people here: HN links it as the accessible, hands-on demo behind the claim that Magic is Turing complete.

“Because Science did a thorough breakdown and demonstration, using actual cards”HN comment, 2020

What Hacker News said 4

RecommendslukiferApr 2020

“Because Science did a thorough breakdown and demonstration, using actual cards”

Thorough breakdown and demo of a Turing machine in MtG.

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For anyone curious about the details of building a Turing machine in MtG, Because Science did a thorough breakdown and demonstration, using actual cards: this video

in “Accidentally Turing-Complete” · view on HN
RecommendsbentonaDec 2023

“Here's a demo”

Demo showing deterministic machine game state.

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Here's a demo: this video Didn't realize this before watching, but it's interesting that there's an incredibly complicated board state but the game state / actions are deterministic, e.g. the players don't have any choices about what to do once the machine is set up.

in “Magic: The Gathering Is Turing Complete (2019)” · view on HN
Recommendsmckn1ghtJun 2026

“if you want to see the cards being used and a little more explanation”

Shows the cards used with extra explanation.

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Someone made a video based on the paper, if you want to see the cards being used and a little more explanation: this video

in “MTG Bench: Testing how well LLMs can play magic” · view on HN
Cites itcyberfartNov 2019

“Because Science recently made a video about how such a game would look like”

Video on building a computer in Magic.

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Related to your comment, here's the paper [0] and Because Science recently made a video about how such a game would look like [1]. [0] link [1] this video

in “My Kid Lost a Game of 'Magic' to Its Creator But Scored a Piece of Its Art” · view on HN