Sig.NULL
Released Sep 2016
Push and rotate blocks, placing them at their places. Discover mono-drones abilities, step by step learn rules of that somber techno world. Solve more than 100 amazing puzzles!
71% positive · 138 reviews
Done
All announced content has been released
High confidence
Done
All announced content has been released
High confidence
Where to get it
Free on Steam
Evaluation
Sig.NULL is a puzzle game with a long history: originally released in 2014 as a free game, it came to Steam in 2016 as a paid title, received an HD version on Xbox in 2020, and that HD version was brought to Steam on October 30, 2023. On September 4, 2024, the developer announced the game was being made free to play, citing a personal philosophy shift toward free games under their new Half-Face Games brand. The developer framed this as a natural endpoint for the game's commercial life — not a launch of new content, but a recognition that the "sell time was over." There are no announced future updates, no unreleased DLC, no roadmap, and no indication of further development. The HD update in October 2023 represents the final form of the game's content, and the September 2024 post confirms the developer has moved on to other projects. The game is complete.
Evidence
Developer announces the game is becoming free to play, states they are now focused on their new brand Half-Face Games and that the game's 'sell time was over.' No future content is mentioned.
HD version of the game released on Steam, bringing visual and UX improvements previously available on Xbox. This appears to be the final major update to the game.
Media
Details
Developer
Publisher
Half-Face Games
Achievements
15
Platform
Windows
Controller
full support
Steam Deck
Not rated
Players
Single-player
About this game
Your task is to put things at their places inside a complex computer system. It’s a whole world with its own laws and filled by mono-drones, which you will control. Use them to place tetra-blocks at its places.
Reach System Core and discover how this techno world was born!
- There are up to 8 different types of mono-drones with individual features (explode, swap, infect, time-control and more)
- Hidden rules of game world, which you have to explore for progression
- Non-linear. You always have few levels to try. If you can't solve one, then try another!
- More than 100 levels which were built with care for you to learn all the rules step by step.
Reach System Core and discover how this techno world was born!
Are these done yet?
Last evaluated Jun 27, 2026
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