Single-player games like Sig.NULL
Below are 16 single-player Steam games similar to Sig.NULL, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Sig.NULL page.
Ranked picks
- 1
Anonymized
Single-player alternative to Sig.NULL — playable solo, no multiplayer required. Shares Indie and Casual with Sig.NULL.
Play as a digital rat and hack your way into the retro-futuristic grid-based movement puzzle world of Anonymized, where you shift hues and dive layers deep in search of the one true Source Cheese.
- 2
DoomWall
Single-player alternative to Sig.NULL — playable solo, no multiplayer required.
Hack your way through the Nex-Us in this turn-based puzzle indie game from a small team of three designers. Will you be clever enough to use the right programs you find along the way to locate the access point before the DoomWall catches up?
- 3
The Gardener
Single-player alternative to Sig.NULL — playable solo, no multiplayer required. Shares Indie and Casual with Sig.NULL.
Solve tile based lawn puzzles. Explore the grounds of a forgotten manor. Discover mysterious flora and figure out their rules. Cut grass and have fun!
- 4
Roboban: Colors
Single-player alternative to Sig.NULL — playable solo, no multiplayer required. Shares Indie and Casual with Sig.NULL.
Roboban: Colors is a single-player Sokoban-style puzzle video game in which you control robots that must reach their charging stations, but not before placing the boxes in their respective destinations.
- 5
BarrelBots
Single-player alternative to Sig.NULL — playable solo, no multiplayer required. Shares Indie and Casual with Sig.NULL.
A multilayered grid-based puzzle game featuring small robots that carry and stack Barrels of nuclear waste.
- 6
E9uations
Single-player alternative to Sig.NULL — playable solo, no multiplayer required. Shares Indie with Sig.NULL.
You are the equal sign(=). Rearrange the numbers and operators to form equation and solve the puzzle.
- 7
SokoLab
Single-player alternative to Sig.NULL — playable solo, no multiplayer required. Shares Casual with Sig.NULL.
SokoLab is a Sokoban game where you play as a cute robot! Push blocks to the objective to reach the end of the level, new mechanics are introduced throughout the game adding layers of complexity to the puzzles! Can you reach the last level?
- 8
ReactorX
Single-player alternative to Sig.NULL — playable solo, no multiplayer required. Shares Indie and Casual with Sig.NULL.
Sokoban-puzzle with exclusive gameplay mechanics on a space fantasy theme.
- 9
Zzzz-Zzzz-Zzzz
Single-player alternative to Sig.NULL — playable solo, no multiplayer required. Shares Indie and Free To Play with Sig.NULL.
When you sleep, you are dreaming. Some dreams are beautiful and vivid, the others are strange, and the rest of them are horrible... We've having them all the night, and then wake up and forget them. But what if one day your "awakening" would be a difficult task? Could you find a way out of the dreams and wake up?
- 10
Mind Trap
Single-player alternative to Sig.NULL — playable solo, no multiplayer required. Shares Indie and Free To Play with Sig.NULL.
Why do people lie? Try to find a way out of mind labyrinths!
- 11
Tower Bombarde
Single-player alternative to Sig.NULL — playable solo, no multiplayer required. Shares Indie and Free To Play with Sig.NULL.
If you can't shoot and there is a wall of turrets against you - you're not defenseless! Let your enemies kill each other!
- 12
Brain Storm : Tower Bombarde
Single-player alternative to Sig.NULL — playable solo, no multiplayer required. Shares Indie and Free To Play with Sig.NULL.
"The best defense is offense" is the wrong slogan for this game. "The best offense is defense" - there is the tactic that can help you survive in virtual world.
- 13
Beyond Minimalism
Single-player alternative to Sig.NULL — playable solo, no multiplayer required. Shares Indie and Free To Play with Sig.NULL.
This small experimental first person minimalistic style game gives one and only quest for you. Walking around rooms of strange labyrinth look for clues to reach nature.
- 14
Danger!Energy
Single-player alternative to Sig.NULL — playable solo, no multiplayer required. Shares Indie and Free To Play with Sig.NULL.
Connect the points with neon rays to liberate virtual city of Santermonia from the Main Virtual Controller's tyranny.
- 15
Heavy Memories
Single-player alternative to Sig.NULL — playable solo, no multiplayer required. Shares Indie and Free To Play with Sig.NULL.
Classic top view, destructible walls, powerups, environment and enemies, as well as the ability to complete the game with various types of tanks!
- 16
DATAFLOW
Single-player alternative to Sig.NULL — playable solo, no multiplayer required. Shares Indie and Free To Play with Sig.NULL.
Control the network dataflow! Pass data packets, catch e-mails and bonuses, destroy spam and viruses! Earn points and buy upgrades! Show your skill to get all things done at once!