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
“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
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.
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
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