Single-player games like P.R.O.T.O.C.O.O.L.
Below are 8 single-player Steam games similar to P.R.O.T.O.C.O.O.L., 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 P.R.O.T.O.C.O.O.L. page.
Ranked picks
- 1
Blackfall: Cyborgs Down
Single-player alternative to P.R.O.T.O.C.O.O.L. — playable solo, no multiplayer required. Shares Action and Indie with P.R.O.T.O.C.O.O.L..
Deploy to a war-torn sci-fi island in Blackfall: Cyborgs Down, a high-intensity third-person looter shooter. Customize 18 Valor Cyborgs across 4 classes, master 60+ weapon models, and a 67-node skill tree. Then, trigger the turn-based 6v6 Prime Battle mode to collect and upgrade heavy mechs.
- 2
Gang of Frogs
Single-player alternative to P.R.O.T.O.C.O.O.L. — playable solo, no multiplayer required. Shares Action and Indie with P.R.O.T.O.C.O.O.L..
Sail through the galaxy as a fearless outlaw frog. Plunder loot, upgrade weapons, eat flies and fight through hordes of monstrous bugs in an intense 1-4 player co-op shooter.
- 3
Iron Apartment Guardian
Single-player alternative to P.R.O.T.O.C.O.O.L. — playable solo, no multiplayer required. Shares Action and Indie with P.R.O.T.O.C.O.O.L..
This exciting TPS mecha action game is set in the future of Seoul, offering a unique experience that combines intense combat with strategic depth. Defend, destroy, and take over apartments with the cool robots you build!
- 4
Little Drone TuTuTu
Single-player alternative to P.R.O.T.O.C.O.O.L. — playable solo, no multiplayer required. Shares Action and Indie with P.R.O.T.O.C.O.O.L..
Little Drone TuTuTu is a top-down twin-stick roguelite shooter. Pilot a heavily armed drone through a hostile research facility, blast waves of security bots and bosses, and stack weapons and augments until the whole screen lights up. Short runs, wild builds, no two ever play the same.
- 5
Modavuj Save The Babies
Single-player alternative to P.R.O.T.O.C.O.O.L. — playable solo, no multiplayer required. Shares Action and Indie with P.R.O.T.O.C.O.O.L..
Save The Babies is an adventure game where you enter into armed conflicts with robots and try to overcome many platform obstacles. In 8 levels, you need to save 8 girls by overcoming obstacles that become more difficult as you progress.
- 6
HKO: Advanced Survival
Single-player alternative to P.R.O.T.O.C.O.O.L. — playable solo, no multiplayer required. Shares Action and Indie with P.R.O.T.O.C.O.O.L..
An open-world survival experience that combines exploration, suspense, resource management, tactical combat, and cooperative multiplayer. Explore dangerous islands, customize weapons, survive against the Penitents and escape with friends in The Phantom Runner experience.
- 7
Number 8
Single-player alternative to P.R.O.T.O.C.O.O.L. — playable solo, no multiplayer required. Shares Action and Indie with P.R.O.T.O.C.O.O.L..
SciFi shooter with first-person and third-person views, as well as adventure and story elements. In the game's world, you will face many dangers. Armed creatures resembling humans, drones, robots, and security systems will all try to destroy you.
- 8
Pigslaughter
Single-player alternative to P.R.O.T.O.C.O.O.L. — playable solo, no multiplayer required. Shares Action and Indie with P.R.O.T.O.C.O.O.L..
Pigslaughter is a top-down shooter where you play as a Sigma Force special agent, trying to save human souls from Pig Primes. Explore a sprawling modern city, wield a variety of weapons, eliminate your enemies, and reclaim the stolen capital.