Steam

DEG

Also known as DEG, d, deg

A non-linear pure puzzle game where you solve various puzzles using logical reasoning. Explore unknown puzzles in the game world.

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Last update

21 May 2026

Original sources

Latest update

AnnouncementPublished 12 May 2026

v1.353Important update v1.353

Some content has been removed from the demo version, including: All puzzles from 1-2 All colored puzzles For more information about the full version, please see: [dynamiclink href="https://youtu.be/d8zKq6MPc_E"]

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Latest updates

Update history

Browse past updates and patch notes for this game.

14updates

February 2026
Patch 1.351Fixed an issue where rainbow boards would display incorrectly in new saves if they had been completed in an old save file. Temporarily added a small number of tutorial puzzles for the rainbow rules. Added a visual effec…Announcementv1.3513 changesFixGameplay26 Feb 2026
Demo v1.32 Major UpdateNew Content Added Approximately 1–2 hours of additional gameplay: All remaining puzzles in Areas 1–2 are now unlocked. Rule #2 has been added. Several puzzles featuring Rule #13 have been added. Mixed-rule puzzles have…Eventv1.326 changesGameplay23 Feb 2026
January 2026
If you’re using the patch updated on January 21, 2026, you may encounter the following issues: Unable to unlock new boards Right-clicking buttons may fail to complete a board How to fix: Return to the Steam client and u…2 changesGameplayPatch notes21 Jan 2026
Game Content All puzzle stages have been completely rebuilt. Over 100 puzzles across 7 different puzzle types. The early-game difficulty has been significantly reduced, with an improved overall difficulty curve. The ori…v1.318 changesGameplayMapsPatch notes19 Jan 2026
November 2025
New Features In Note Mode: Shift + Mouse Wheel now switches note colors (red, blue, and yellow). In Note Mode: Shift + Ctrl + Mouse Wheel adjusts the thickness of notes and the size of the eraser. Bug Fixes Fixed an iss…v1.242 changesFixPatch notes03 Nov 2025
October 2025
New Features Added adjustable language localization options; Added support for cloud saves; Bug Fixes Fixed display issues with certain fonts;v1.233 changesFixGameplayPatch notes25 Oct 2025
New Features Label Function: Use the shortcut Alt + [Number Key] to save the current puzzle state to the corresponding slot, and [Number Key] to load the puzzle state from that slot. Operation Improvements Added WASD ke…v1.225 changesMapsGameplayPatch notes24 Oct 2025
New Features Added note eraser: In note mode, press E to switch to erase mode. You can use Shift + Mouse Wheel to adjust the eraser size, and Right Click to erase notes. Added difficulty selection: In Normal Mode, after…v1.215 changesFixGameplayPatch notes21 Oct 2025
Update Highlights Reconstructed most of the puzzles; Added a new puzzle type and removed the old dual-solution puzzle type; Improved the tutorial stages for the rules; Significantly restructured the level design; Greatl…v1.23 changesGameplayPatch notes17 Oct 2025
Note System Refactor Press Tab to switch between Color Mode and Note Mode. Different cursor colors indicate the current mode: red for Note Mode, white for Color Mode. In Note Mode: Left Mouse Button – Draw notes Right M…v1.14Patch notes14 Oct 2025
Demo Version V1.13 UpdateGame Updates / Optimizations New Feature: Undo (Z) or Redo (U) coloring and marking actions, supporting up to 200 steps. New Feature: Double-tap R to clear all marks. Audio Optimization: Lowered the volume of certain BG…Announcementv1.134 changesGameplayUI/audio11 Oct 2025

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