About the Game
E9uations is a single-player game based on Sokoban that adds the rule of arithmetic operations.
You Are the Equals Sign
The character you control is the equals sign itself.
Move the equals sign to position numbers and operators, and complete the equation.
Once connected to an equation, the calculation runs automatically and the result appears on the other side.
Create the Value You Need
When you connect a number to an octagon-shaped target of the same value, both disappear.
Your goal is to clear all the targets.
Only the four basic arithmetic operations are used, and no complex mental math is required to solve the puzzles.
each puzzle demands its own unique insight.
Puzzle Structure
The game features multiple chapters, each with a different theme.
Within each chapter, easier and harder puzzles are separated, allowing for non-linear progression.
Hints are available for most puzzles.
Hints are simpler versions of the main puzzles that share the same core idea.
Other Features
Unlimited Undo.
160+ handcrafted puzzles
Controller support
Screenshots
6 images
Version Information
Steam Patch Notes
Official update history
Puzzle Changes
- Minor adjustments: 9-inv3-H, 9-20-H
- Removed unintended solutions: 5-inv3, 5-inv3-H, 7-18, 8-9, 8-15, 9-8, 9-18
Puzzle Changes
- Minor adjustments: 9-inv3, 9-14-H, 9-20
- Reduced difficulty: 0-1-H
- Increased difficulty: 7-9
Other Changes
- Adjusted cursor visibility when using accessibility settings
Puzzle Changes
- Minor adjustments: 7-12-H, 7-14-H, 9-14-H
- Removed unintended solutions: 1-15, 6-8, 9-14
- Renumbered 7-21 to 8-15. The level layout and intermediate solution steps have been changed.
- Adjusted the level numbering in Chapter 8. Main path levels now have lower numbers than optional ones.
Puzzle Changes
- Removed unintended solutions: 1-15, 3-14, 9-14, 9-inv25
Puzzle Changes
- Minor adjustments: 4-4, 9-26
- Removed unintended solutions: 1-15, 9-12, 9-14, 9-22
Bug Fixes
- Fixed visual bug in Chapter 8
- Fixed the bug for achievement E9 unlock conditions.
Puzzle Changes
- Minor adjustments: 3-13-H, 9-27, 9-inv4
- Reduced difficulty: 3-11-H, 3-14, 8-7
- Increased difficulty: 8-7-H
- Removed unintended solutions: 6-10, 9-22, 5-inv4
Bug Fixes
- Fixed visual bug in Chapter 8
Chapter 8 Improvements
- The gimmicks in Chapter 8 have been slightly altered in how they work. This is part of an effort to improve visual representation, and does not change the way existing puzzles are solved.
- Art related to Chapter 8 has been updated.
Puzzle Changes
- Minor adjustments: 8-4, 8-4-H, 8-5-H, 8-6-H, 8-8, 0-1-H
- Reduced difficulty: 7-5, 8-16
- Increased difficulty: 8-14
- Removed unintended solutions: 9-inv22-H
Bug Fixes
- Fixed visual bugs related to gimmicks in Chapter 8
Puzzle Changes
- Minor adjustments: 4-8, 4-15
- Reduced difficulty: 5-9, 6-8
- Removed unintended solutions: 4-9, 4-14, 7-11, 8-2-H
Other Changes
- Added microfeedback for gimmicks in Chapter 5
Puzzle Changes
Minor adjustment: 7-4, 7-4-H, 8-2, 8-2-H
Reduced difficulty: 8-6, 8-6-H
Bug Fixes
Fixed freezing issue when returning from the credits screen
Fixed an error in the unlock condition for Achievement #4
Puzzle Changes
- Minor adjustment: 7-13-H
- Reduced difficulty: 3-03, 3-14
Other Changes
- Added a button on the title screen to view the credits.
This is an update accompanying the full release.
Compared to the previous demo, the following changes have been made.
Art, UI, and music revisions
Difficulty adjustments for some puzzles
Various other bug fixes
0.4.0 Update
We're working on the main game content, but there are some changes that also apply to the demo version.
Artwork
Fixed the title screen breaking in windowed mode
Updated number fonts
Removed the token color customization feature as it made puzzles harder to read. Please use accessibility settings if you have difficulty distinguishing colors.
Gameplay Improvements
Fixed delays when entering puzzles
Improved keyboard and gamepad controls
Enhanced mouse interaction with UI elements
Other Fixes
Applied various optimizations
Fixed miscellaneous bugs
Current Release
Build 24398340
Uploaded Oct 10, 2026
System Requirements
How to Install
E9uations.exe to play
Troubleshooting tips
• Run Redist/_CommonRedist installers if game won't start
• Add folder to Windows Defender exclusions
• Run as administrator
Download
Direct link available
Needed when extracting (WinRAR / 7-Zip) — not a site login.
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Download E9uations for PC with a direct link or via torrent. Get the full version of E9uations for free. E9uations is a Indie released by 9npotato.