Single-player games like Smile Protocol
Below are 16 single-player Steam games similar to Smile Protocol, 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 Smile Protocol page.
Ranked picks
- 1
They Killed Your Cat
Single-player alternative to Smile Protocol — playable solo, no multiplayer required. Shares Action and Indie with Smile Protocol.
A short but relentless first-person shooter featuring manual reloading, walking, and blinking, with settings that let you customize your experience.
- 2
Eternal Hatred
Single-player alternative to Smile Protocol — playable solo, no multiplayer required. Shares Action and Indie with Smile Protocol.
Eternal Hatred is a fast-paced indie shooter blending the aesthetics of ULTRAKILL and Quake. At its core lies a dark story about the nature of human cruelty and an attempt to drown out inner pain within the abyss of one's own consciousness.
- 3
INFEES
Single-player alternative to Smile Protocol — playable solo, no multiplayer required. Shares Action and Indie with Smile Protocol.
Infees is a singleplayer voxel game. At the moment it has only one playable mode where you have to kill zombies and survive as long as possible, there are many weapons, and upgrades at your disposal to make this task easier!
- 4
Bone Mayhem
Single-player alternative to Smile Protocol — playable solo, no multiplayer required. Shares Action with Smile Protocol.
Bone Mayhem is a first person shooter versus waves of enemies, where player can apply modifications to weapon and active abilities.
- 5
THNT : Target Hunt 'N Terminate
Single-player alternative to Smile Protocol — playable solo, no multiplayer required. Shares Action and Indie with Smile Protocol.
You’ve woken up in an artificial body on a strange and hostile world. Can you uncover its secrets and fight your way out? Take part in a metal fueled FPS single-player campaign that combines frantic action with tactical decision-making.
- 6
Primordial Pain
Single-player alternative to Smile Protocol — playable solo, no multiplayer required. Shares Action and Indie with Smile Protocol.
Primordial Pain is a brutally unforgiving, fast paced arena shooter with one key mechanic: Pain. Perform an elegant dance on the fine line between maximum power and certain death.
- 7
Emitters - Drone Invasions
Single-player alternative to Smile Protocol — playable solo, no multiplayer required. Shares Action and Indie with Smile Protocol.
A fast-paced, first-person experience set in a future taken over by deadly hi-tech drones. As humanity's only hope, it's your mission to identify this threat's origin and neutralize it. But are you ready to face an army whose single target is yourself?
- 8
Void Daggers
Single-player alternative to Smile Protocol — playable solo, no multiplayer required. Shares Action and Indie with Smile Protocol.
One touch kills you. Your timer is your score. Neon wireframe horrors swarm from infinite darkness. Shatter them, harvest their essence, forge your daggers through 5 tiers of devastation. Bunny hop the void. Dagger jump to survive. Prove your skill on Steam leaderboards. For fans of Devil Daggers.
- 9
Ground Parkour : First Mission
Single-player alternative to Smile Protocol — playable solo, no multiplayer required. Shares Action and Casual with Smile Protocol.
Ground parkour: First Mission, in short, you compete with yourself to reach the highest point on the track with different characters and different abilities in a construction site in the city. Each character has different abilities and you progress on this track full of obstacles. Enjoy!
- 10
Don't Leave
Single-player alternative to Smile Protocol — playable solo, no multiplayer required. Shares Action and Indie with Smile Protocol.
Welcome to a mysterious adventure where justice and the supernatural intertwine! Judge Harlan, in his old country cottage, faces a mysterious presence after his mother's sudden departure. Explore justice's limits in this extraordinary tale!
- 11
Sinister Hospital
Single-player alternative to Smile Protocol — playable solo, no multiplayer required. Shares Action and Indie with Smile Protocol.
In the dark forests of Duskwood town, an abandoned hospital rises ominously. Despite its closure years ago, "Sinister Hospital" harbors terrifying secrets. The player enters to follow the trail of a group of lost children from the town. There lies a dark journey and quest for justice: Judge Harlan.
- 12
Satan Moans
Single-player alternative to Smile Protocol — playable solo, no multiplayer required. Shares Action and Indie with Smile Protocol.
Are you ready for an adrenaline-fueled adventure with "Satan Moans"? In this horror-packed game, you'll explore the supernatural events surrounding a teenager returning home in the dead of night. Are you ready to dive into a suspenseful universe?
- 13
Grouls
Single-player alternative to Smile Protocol — playable solo, no multiplayer required. Shares Action and Indie with Smile Protocol.
Uncover the chilling secrets of an abandoned house as Denis. Collect body parts, solve puzzles, and escape terrifying entities. Your choices shape your fate. Can you survive the nightmare?
- 14
Night Market Simulator
Single-player alternative to Smile Protocol — playable solo, no multiplayer required. Shares Indie and Simulation with Smile Protocol.
Start your market from scratch, choose and price your own products. Every sale leads to new licenses, bigger spaces, and exciting new opportunities. Take full control of your warehouse layout, manage your staff wisely, and lay the foundation for your very own market empire!
- 15
Submeris
Single-player alternative to Smile Protocol — playable solo, no multiplayer required. Shares Action and Indie with Smile Protocol.
Submeris is an underwater mining adventure set beneath a mysterious island. Dig, upgrade your gear, survive dangerous depths, and uncover the legendary treasure hidden far below the ocean floor!
- 16
Sweet Toys Simulator
Single-player alternative to Smile Protocol — playable solo, no multiplayer required. Shares Indie and Simulation with Smile Protocol.
Start your sweet store from scratch!. Pick and price your own toys and candies. Unlock new licenses with every sale, expand your shop, hire staff, and build the most colorful toy & candy empire ever! Manage shelves, set prices, and make your customers smile! 🧸🍭🎉