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
Bonfire Peaks
Single-player alternative to Sig.NULL — playable solo, no multiplayer required. Shares Indie with Sig.NULL.
Set your belongings on fire on a beautiful voxel art puzzle island.
- 2
The Last Cube
Single-player alternative to Sig.NULL — playable solo, no multiplayer required. Shares Indie and Casual with Sig.NULL.
Cube puzzler and an epic adventure. Stamp stickers to the sides of your cube to imbue each surface with unique powers, which are vital to solving puzzles and finding secrets.
- 3
Parcel
Single-player alternative to Sig.NULL — playable solo, no multiplayer required. Shares Indie with Sig.NULL.
Parcel is a brain-twisting puzzle game where unique character abilities are used in unison to solve interlocking laser conundrums. Switch between members of your colorful team of postpeople and make your way through over 120 futuristic mind-benders!
- 4
Isles of Sea and Sky
Single-player alternative to Sig.NULL — playable solo, no multiplayer required. Shares Indie with Sig.NULL.
A fantastic, oceanic, open world puzzle adventure. Solve innovative block puzzles while unearthing a mystifying story, gaining new friends that change the puzzle landscape, and unlocking powers that provide more options for how you choose to progress through the enigmatic Isles of Sea and Sky.
- 5
The Signal State
Single-player alternative to Sig.NULL — playable solo, no multiplayer required.
Set in a post-apocalyptic future, The Signal State puts your logic skills to the test with complex puzzles inspired by modular synthesizers. Repair machines, rebuild an abandoned farm, and be part of a revolution that will change the fate of agriculture once and for all.
- 6
The Talos Principle
Single-player alternative to Sig.NULL — playable solo, no multiplayer required. Shares Indie with Sig.NULL.
The Talos Principle is a first-person puzzle game in the tradition of philosophical science fiction. Made by Croteam and written by Tom Jubert (FTL, The Swapper) and Jonas Kyratzes (The Sea Will Claim Everything).
- 7
Maxwell's puzzling demon
Single-player alternative to Sig.NULL — playable solo, no multiplayer required. Shares Indie and Casual with Sig.NULL.
"Thermodynamic" puzzle where Maxwell's demon does work of block-pushing. Deal those hot blocks with cold blocks so that the demon doesn't get burnt.
- 8
Ctrl Alt Ego
Single-player alternative to Sig.NULL — playable solo, no multiplayer required. Shares Indie with Sig.NULL.
Innovative genre mashup (first-person immersive sim puzzler FPS RPG) with emphasis on problem-solving and creativity. Unique vibes and original mechanics that you won't have experienced before. One of the best games of 2022 according to various credible sources!
- 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!