Sig.NULL
Block-pushing puzzles with drone abilities and hidden rules to uncover
SaintHeiser · Published by Half-Face Games · Released Sep 27, 2016
- Reviews
- Mostly Positive
- 72% of 159
- Recent reviews
- Not enough recent
- Players
- 0
- daily peak, Oct 30, 2026
- Steam Deck
- Untested
- Last update on Steam
- 3 years ago
- Oct 30, 2023
What is Sig.NULL?
Sig.NULL is a free-to-play, single-player 2D puzzle game set inside a computer system. You use drones that can explode, swap, or manipulate time to place blocks in designated spots across more than a hundred levels, working toward the System Core to discover the system's origins.
For you if...
- +you like having several levels available when one stumps you
Not for you if...
- −you want straightforward puzzles with little trial and error
What players say
72% of 159 reviews are positive
Players praise the challenging puzzles and varied mechanics. The recurring complaint is sparse instruction, with some players relying on outside guides to understand the rules.
Screenshots and trailer
Sig.NULL system requirements
Minimum: 0 GB of disk space.
As published by the developer.
Can my PC run Sig.NULL?
The published requirements do not name a graphics card we can compare.
Set up my PC →Minimum
- OS
- Microsoft® Windows® XP / Vista
- Storage
- 25 MB available space
Recommended
- OS
- Microsoft® Windows® 7 or later
- Storage
- 25 MB available space
Does Sig.NULL have co-op or multiplayer?
No: single-player only, no multiplayer modes declared.
Does Sig.NULL run on Steam Deck?
Untested Not yet tested by Valve on Steam Deck.
PC version details
- DRM
- None declared on Steam
- Controller
- Full controller support
- Platforms
- Windows
- Achievements
- 15
- Steam features
- Cloud saves, Family Sharing, Trading cards
- Languages
- Text only: English, Russian.
Does Sig.NULL use AI-generated content?
No AI-generated content is disclosed on the game's Steam page.
Self-reported by the developer under Steam rules: it covers AI content that ships in the game, not tools used to make it. Steam page checked on Oct 27, 2026. How to filter AI games on Steam
