An open-ended programming puzzle game with a minimalist, abstract, Assembly-like programming language.
Release Date:
Oct 31, 2025
Developer:
89o
Publisher:
89o
Gameplay | Release Trailer
Gameplay | 1.11 Update Trailer
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Buy 1-DC

INTRODUCTORY OFFER! Offer ends November 7

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$4.99
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About This Game

TO BE CLEAR: YOU NEED TO BE SOMEWHAT FAMILIAR WITH HOW PROGRAMMING WORKS IN ORDER TO ENJOY THIS GAME.

1-DC is an open-ended programming puzzle game (a "zach-like"), featuring a fictional low-level programming language. There are only three base commands; the rest depends on the commands' parameters (somewhat like SIC-1). This challenges the player to think in abstract and minimal terms.

How can you calculate a sine wave with only two variables? That's up to you to figure out.

Features:

  • 32 base levels;

  • 16 bonus levels, featuring negative numbers and a third variable slot;

  • A commands par in each level that you can optimize for;

  • 12 achievements, ranging from tedious to confusing;

  • A simple level editor, with more variable slots and a greater range of values

  • Voicelogs left by your boss, to inform you about his search for your missing wife.

Mature Content Description

The developers describe the content like this:

In the optional voicelogs, there are references to domestic violence, torture and suicide, and textual descriptions of gruesome violence.

System Requirements

Windows
SteamOS + Linux
    Minimum:
    • Requires a 64-bit processor and operating system
    • OS *: Windows 8 64-bit
    • Processor: AMD A4-1250 APU or Intel Pentium 957
    • Memory: 4 GB RAM
    • Graphics: AMD Radeon HD 8210 Graphics or Intel HD Graphics
    • DirectX: Version 11
    • Storage: 100 MB available space
    Recommended:
    • Requires a 64-bit processor and operating system
    • OS: Windows 10 64-bit
    • Processor: Intel Core i7 720QM or AMD Phenom 9550
    • Memory: 6 GB RAM
    • Graphics: ATI Radeon HD 4830 or Intel HD 520
    • DirectX: Version 12
    • Storage: 150 MB available space
* Starting January 1st, 2024, the Steam Client will only support Windows 10 and later versions.
    Minimum:
    • OS: Ubuntu 22 LTS 64-bit
    • Processor: AMD A4-1250 APU or Intel Pentium 957
    • Memory: 4 GB RAM
    • Graphics: AMD Radeon HD 8210 Graphics or Intel HD Graphics
    • Storage: 100 MB available space
    Recommended:
    • OS: Ubuntu 24 LTS 64-bit
    • Processor: Intel Core i7 720QM or AMD Phenom 9550
    • Memory: 6 GB RAM
    • Graphics: ATI Radeon HD 4830 or Intel HD 520
    • Storage: 150 MB available space
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