Done
All announced content has been released
High confidence
Where to buy
Steam $1.33 $1.99 −33%
Can't confirm — worth a look
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Evaluation
Unium launched on March 27, 2015 as a complete puzzle game featuring over 100 levels and a built-in level editor. After release, the developer shipped two feature updates: Steam Workshop integration with a level editor on May 9, 2015, and language selection support on June 11, 2015. The final recorded developer communication was a minor bug fix on December 14, 2015. There have been no developer posts, updates, patches, or announcements since that date. The store description makes no mention of planned future content, and there are no unreleased DLC listings. The game launched as a self-contained product and all post-launch updates have long since shipped. Kittehface Software has not indicated any further development plans.
Evidence
Minor bug fix update addressing offline mode and workshop download feedback — the last developer communication on record.
Steam Workshop and level editor feature launched as a post-release update.
Media
Details
Developer
Publisher
Kittehface Software
Achievements
22
Platform
Windows, macOS, Linux
Controller
—
Steam Deck
Not rated
Players
Single-player
About this game
Your task is to draw a line. A single line. How complex can that be?
Start with one tile and trace a line to the next, then the next. Each tile you pass over flips from black to white, or back again. Using only a single line, can you flip all the black tiles?
The simplest puzzle can have hundreds of solutions, and Unium features over 100 levels to solve your way through. Unlock harder puzzles by solving easier ones, learn what works and what doesn't, and solve puzzles in multiple ways to earn achievements. Even better, use the built-in level editor to create your own puzzles, and share them on Steam Workshop! Unium is a fantastic pick up and play puzzle game that can entertain for a minute or an hour.
Start with one tile and trace a line to the next, then the next. Each tile you pass over flips from black to white, or back again. Using only a single line, can you flip all the black tiles?
The simplest puzzle can have hundreds of solutions, and Unium features over 100 levels to solve your way through. Unlock harder puzzles by solving easier ones, learn what works and what doesn't, and solve puzzles in multiple ways to earn achievements. Even better, use the built-in level editor to create your own puzzles, and share them on Steam Workshop! Unium is a fantastic pick up and play puzzle game that can entertain for a minute or an hour.
Are these done yet?
Last evaluated Jun 27, 2026
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