Alchemist 404 screenshot 1
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Release date TBA·Error Games

Alchemist 404 is an experimental roguelike deckbuilder inspired by real-world chemistry. Isekai’d into a fantasy world, you must fight elemental dragons using a deck built around sword mastery and become the hero you were never supposed to be.

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About Alchemist 404

Become the Hero You Were Never Supposed to Be: You are just a gamer trapped in a brutal fantasy realm, but with a blade in your hand and the laws of science in your head, you might just stand a chance. Will you master the alchemical formulas required to slay the dragons, or will you burn trying?

Alchemist 404 screenshot 1

Stylized Art

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Hand-drawn artwork with detailed shapes, strong outlines, and prominent, irregular linework gives the game a distinct visual style with a xylography-inspired feel.

Tag-Based Card System

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Your deck scales with you. Instead of relying on static damage numbers, cards are driven by a dynamic tag system, letting your hero’s stats determine how powerful they become.
Alchemist 404 video 2

Slot-Based Combat

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Place cards into different slots to predict, counter and outplay your enemy’s actions.
Alchemist 404 video 3

Simultaneous Turns

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Plan your moves, commit your cards, then reveal your enemy’s hidden actions and watch both sides resolve at once.
Alchemist 404 video 4

Alchemy & Reactions

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Combine elements to trigger reactions inspired by real-world chemistry.
Alchemist 404 video 5

Steam data © 2026 Valve Corporation. Trademarks are property of their respective owners.

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