Single-player games like Psi Project
Below are 10 single-player Steam games similar to Psi Project, 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 Psi Project page.
Ranked picks
- 1
Psi Project: Legacy
Single-player alternative to Psi Project — playable solo, no multiplayer required. Shares Action and Indie with Psi Project.
Psi Project Legacy - is a new part of the hardcore 2D shooter with elements of horror. It all starts again. You have to go back to the very unfortunate complex to endure the horror.
- 2
HEADCUTTER
Single-player alternative to Psi Project — playable solo, no multiplayer required. Shares Action and Adventure with Psi Project.
HEADCUTTER is a sci-fi spaghetti western FPS with brutal combat, destructible environments, and lots of gore. Track targets as a space bounty hunter, explore maps with multiple routes, and use the crunchy gunplay to cut their heads off so you can get your money!
- 3
CARNAL
Single-player alternative to Psi Project — playable solo, no multiplayer required. Shares Action and Indie with Psi Project.
CARNAL is a fast and challenging retro FPS straight from the mid '90s. The Sons of Anak are opening portals to extract Dark Matter from the "other side". Combat the possessed soldiers, the manifested demons helping them, and any inanimate objects standing in your way!
- 4
NUCLIDEAN
Single-player alternative to Psi Project — playable solo, no multiplayer required. Shares Action and Adventure with Psi Project.
NUCLIDEAN puts you into the shoes of a janitor at a planetary outpost invaded by an alien cult. In this retro boomer-shooter with a Non-Euclidean twist, you will encounter portals, crazy geometry and bloody monstrous enemies. All that on a distant planet where the rules of the Earth do not apply.
- 5
Pile 'Em High Episode 3: Convalescence
Single-player alternative to Psi Project — playable solo, no multiplayer required. Shares Action and Indie with Psi Project.
Deep in Colorado’s Rocky Mountains, a secluded estate becomes ground zero for terror. Pile ’Em High 3 throws you into nonstop action‑horror mayhem—cultists, zombies, abominations—all standing between you and the truth behind the world‑shattering Pandemic
- 6
Putin kills: Coronavirus
Single-player alternative to Psi Project — playable solo, no multiplayer required. Shares Action and Indie with Psi Project.
Great showdown 2020: COVID-19 vs BIGCOCK-19
- 7
Selaco
Single-player alternative to Psi Project — playable solo, no multiplayer required. Shares Action and Indie with Psi Project.
Selaco is a brand new original shooter inspired by classics, featuring thrilling action set pieces, destructibility, smart enemies and a fleshed out story taking place within an immersive game world.
- 8
The Citadel
Single-player alternative to Psi Project — playable solo, no multiplayer required. Shares Action and Indie with Psi Project.
The Citadel is a brutal first person shooter, and a love letter to classic games such as Marathon, Doom and Wolfenstein 3d. Descend into the depths of a dark citadel, and fight through 6 Episodes and 30 levels of action packed with 6 challenging bosses. Go forth, Martyr.
- 9
Crazy Scientist
Single-player alternative to Psi Project — playable solo, no multiplayer required. Shares Indie and Adventure with Psi Project.
Crazy Scientist - is a simple, intuitive 2D platformer with original, beautiful graphics suitable for all ages. In this platformer you have to pass a variety of picturesque levels for a mad scientist. Your main mission is to complete levels by gathering vials.
- 10
Battle of Frigates
Single-player alternative to Psi Project — playable solo, no multiplayer required. Shares Action and Indie with Psi Project.
Have you ever played in Tanks in dendy? What if the battles took place at sea? Before you there is an ideological continuation - Battle of Frigates. Battle of Frigates – fun top down shooter where you are in the role of a frigate are fighting on the water, your enemies - the hostile enemy frigates, their bosses, guns, mines.