Single-player games like Carpe Diem Project
Below are 8 single-player Steam games similar to Carpe Diem 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 Carpe Diem Project page.
Ranked picks
- 1
WASTED Will Be Brutal
Single-player alternative to Carpe Diem Project — playable solo, no multiplayer required. Shares Action and Indie with Carpe Diem Project.
Open-World Tactical Survival
- 2
Phantom Line
Single-player alternative to Carpe Diem Project — playable solo, no multiplayer required. Shares Action and Indie with Carpe Diem Project.
Join the paranormal SWAT. PHANTOM LINE is a co-op (1-4) shooter set in the post-nuclear European continent. Your mission is to search and contain paranormal events and activities (anomalies) hidden from the public eye, in an open world map full of dynamic events.
- 3
Bloody Moon
Single-player alternative to Carpe Diem Project — playable solo, no multiplayer required. Shares Action and Indie with Carpe Diem Project.
This is a single-player third-person shooter about the zombie virus outbreak in the future world, as the last survivor and the last resistance of the zombies!
- 4
Cepheus Protocol: Project Fenrir
Single-player alternative to Carpe Diem Project — playable solo, no multiplayer required. Shares Action and Indie with Carpe Diem Project.
In Cepheus Protocol Project Fenrir, players battle relentless zombie waves as elite Fenrir operatives, mastering Arcade Time Attacks and intense Horde Defense Missions with strategic weaponry and tactics. Dive into exhilarating chaos.
- 5
Hashiko
Single-player alternative to Carpe Diem Project — playable solo, no multiplayer required. Shares Action and Indie with Carpe Diem Project.
Hashiko is an action-adventure game with a heavy, solitary atmosphere, inspired among others by Silent Hill, Days Gone and Slitterhead. Explore a post-apocalyptic Japan altered by psychoannexion, survive a hostile world, and embody multiple characters across different eras.
- 6
DECAYED
Single-player alternative to Carpe Diem Project — playable solo, no multiplayer required. Shares Action and Indie with Carpe Diem Project.
Taking the place of a Green Beret, you will single-handedly witness the world fall, following the events of a failed search and rescue mission. Barely making it out with your life, you will witness pure chaos unfold, as you soon find yourself within an undead hellscape.
- 7
Lone City
Single-player alternative to Carpe Diem Project — playable solo, no multiplayer required. Shares Action and Indie with Carpe Diem Project.
Lone City is a first/third-person open-world survival shooter. The world is gone—only you, a dog, and a sleek car remain. No missions, no hope. Just ruins, silence, and a flicker of life refusing to die.
- 8
WAR OPERATION™ : Full Contact
Single-player alternative to Carpe Diem Project — playable solo, no multiplayer required. Shares Action and Adventure with Carpe Diem Project.
Iraq, April 2003, in the midst of a frighteningly intense confrontation. Iraqi army against the U.S. Marines, take your class, your weapons and run through Baghdad streets, near Firdos Square, frozen in the days of Saddam Hussein's regime. A unique and exceptional experience never seen before.