Sig.NULL

Sig.NULL

SaintHeiser · 2016 · Indie, Casual, Puzzle, Difficult, 2D

PC
Mostly Positive71% · 136

Compare prices in Keyshops

Keyshops are third-party marketplaces — keys are resold and can be region-locked or a different edition. Check the listing's region & edition before buying.

Gameseal
Gameseal
Standard Edition · Steam
$0.37
Buy
Eneba
Eneba
Standard Edition · Steam
$0.61
Buy

Screenshots

About Sig.NULL

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.
  • 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!

What Steam players say

Recent verbatim reviews from Steam — separate from playze.io community reviews below.

Not recommended Jun 14, 2026
I did not enjoy this puzzle game play but as it is free, it could be worth a try if you like these. FYI This game no longer gives you the black square emoticon for 2 hour game play and it is not on market. The only emoticon available for purchase in the point shop is the penguin. I hope this is glitch. I used different emoji in the meantime, see comments for kitten emoticon art
13 found this helpful
Recommended Jul 12, 2025
7 found this helpful
Not recommended Jun 7, 2026
Update: I'll leave my previous review below, but I can't in good conscience give this game a positive review anymore. The main menu is gamified with a handful of puzzle elements. I noticed this a few hours into the game. Right at the end of the gamified section, the very last thing you can do is activate a block. I went to the button I needed to be next to in order to do that and activated it. As a "fun" troll the dev added to the game, that button also happens to be at the location of a reset button that immediately deletes all of your progress with no warning. I don't know what would ever possess a dev to do this. The thing I hate most in games is when they don't value your time, and this dev just threw every second of progress I'd made in this game so far in the garbage. It's just the worst. No matter how much I like the actual gameplay, and it's ♥♥♥♥♥♥♥ amazing, I truly can't recommend other people play the game when this might also happen to them. I was "only" three hours in, but what if someone else doesn't notice the gamified menu until six or twelve hours in and has all that time dumped in the garbage? I'm not going to be even partially responsible for that. It's wei…
Recommended Jan 5, 2026
Sokoban with a twist. It's not easy to start as you have to figure out some things on your own, but the puzzles are nice.
Recommended Oct 27, 2025
Игра Sig.NULL - это мрачное и атмосферное погружение в мир киберпанка, пропитанный безысходностью и моральными дилеммами. Визуальный стиль, выполненный в пиксельной графике, идеально передает ощущение упадка и технологической антиутопии. Сюжет, хотя и не отличается особой оригинальностью, держит в напряжении благодаря хорошо прописанным персонажам и нелинейности повествования. Ты постоянно сталкиваешься с тяжелыми выборами, последствия которых влияют на дальнейшее развитие истории. Геймплейно Sig.NULL - это смесь point-and-click квеста и визуальной новеллы. Исследование локаций, сбор информации и взаимодействие с персонажами составляют основу игрового процесса. Головоломки не отличаются особой сложностью, но логично вплетены в общий сюжет, требуя от игрока внимания к деталям и умения анализировать информацию. Атмосфера игры, созданная за счет саундтрека и детализированного окружения, заслуживает отдельной похвалы. Музыка идеально дополняет мрачный визуальный стиль, а детализированные пиксельные локации создают ощущение настоящего киберпанк-города. В целом, Sig.NULL - это отличная игра для тех, кто ценит атмосферные и сюжетно-ориентированные проекты. Несмотря на свою простоту, он…
Not recommended Oct 13, 2025
I like the description 'repetitive and strange'

Community reviews

0 reviews

Sign in to write a review.

No reviews yet. Be the first to review this game.

More like Sig.NULL