Single-player games like I'm on Observation Duty 3
Below are 15 single-player Steam games similar to I'm on Observation Duty 3, 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 I'm on Observation Duty 3 page.
Ranked picks
- 1
Bring to Light
Single-player alternative to I'm on Observation Duty 3 — playable solo, no multiplayer required. Shares Indie and Adventure with I'm on Observation Duty 3.
Trapped in the city subway system due to a sudden disaster, you explore the depths of the tunnels to find your way out. The further you explore, the more you realize there is more to this disaster...and the lurking shadows are following your every move.
- 2
Dark Trip
Single-player alternative to I'm on Observation Duty 3 — playable solo, no multiplayer required. Shares Indie and Adventure with I'm on Observation Duty 3.
Psychedelic horror escape room where you eat pills and see hallucinations to solve puzzles of an eerie crime case. The most unique and bizarre gaming experiences, where you take on the role of an investigator searching for a missing woman — and are forced to consume drugs during your mission.
- 3
Project Liminal Redux
Single-player alternative to I'm on Observation Duty 3 — playable solo, no multiplayer required. Shares Indie and Adventure with I'm on Observation Duty 3.
Project Liminal Redux is a first-person horror made in realistic 3D graphics. The gameplay consists of collecting notes, solving riddles and escaping from various entities. The main goal is to survive and escape.
- 4
Chainsaw Snuff Shots VR
Single-player alternative to I'm on Observation Duty 3 — playable solo, no multiplayer required. Shares Indie and Adventure with I'm on Observation Duty 3.
Trapped in a deranged killer’s domain, you must outsmart the nightmare. The chainsaw-wielding psycho hears everything—every step, every breath. Use camera, tools, stealth, and your wits to survive. One wrong move, and the hunt begins. Will you escape, or become another gruesome trophy?
- 5
Effigy : The Descent
Single-player alternative to I'm on Observation Duty 3 — playable solo, no multiplayer required. Shares Indie with I'm on Observation Duty 3.
Effigy : The Descent is a first-person survival-horror game in which you will face statues, with your lantern as your only tool to stop them. Gather all artefacts from the cave and freedom will be yours !
- 6
I'm on Observation Duty 4
Single-player alternative to I'm on Observation Duty 3 — playable solo, no multiplayer required. Shares Indie with I'm on Observation Duty 3.
A spot the difference -type of puzzle horror game about monitoring live surveillance camera footage and spotting anomalies. Anomalies range from furniture movement to intruders. Fix anomalies by filing reports. You will need sharp eyes and good memory. The goal is to survive the entire night.
- 7
Narcosis
Single-player alternative to I'm on Observation Duty 3 — playable solo, no multiplayer required. Shares Indie and Adventure with I'm on Observation Duty 3.
Survival, horror at the sunless depths of the Pacific Ocean: Stranded on the seafloor with low light and few tools, an industrial diver takes desperate steps to surface before his oxygen — and sanity — give out.
- 8
DEATHWATCH
Single-player alternative to I'm on Observation Duty 3 — playable solo, no multiplayer required. Shares Indie with I'm on Observation Duty 3.
You've been tasked to observe supposedly haunted locations. Observe and log paranormal events and use the tools at your disposal to gather data on any potential paranormal threats and exterminate them if necessary.
- 9
I'm on Observation Duty
Single-player alternative to I'm on Observation Duty 3 — playable solo, no multiplayer required. Shares Indie with I'm on Observation Duty 3.
As an employee of a mysterious organization your job is to monitor live surveillance camera footage and spot anomalies using your sharp eyes and good memory. Can you survive the entire night shift or will you succumb into paranoia?
- 10
I'm on Observation Duty 2
Single-player alternative to I'm on Observation Duty 3 — playable solo, no multiplayer required. Shares Indie with I'm on Observation Duty 3.
Your job is to monitor live surveillance camera footage and spot anomalies in the monitored rooms. Anomalies range from furniture movement to otherworldly intruders. When you spot an anomaly you have to file a report to fix it. You will need sharp eyes and good memory to survive the entire night.
- 11
I'm on Observation Duty 5
Single-player alternative to I'm on Observation Duty 3 — playable solo, no multiplayer required. Shares Indie with I'm on Observation Duty 3.
As an employee of a mysterious organization your job is to monitor live surveillance camera footage and spot anomalies using your sharp eyes and good memory. Can you survive the entire night shift or will you succumb into paranoia?
- 12
I'm on Observation Duty 6
Single-player alternative to I'm on Observation Duty 3 — playable solo, no multiplayer required. Shares Indie with I'm on Observation Duty 3.
As an employee of a mysterious organization your job is to monitor live surveillance camera footage and spot anomalies using your sharp eyes and good memory. Can you survive the entire night shift or will you succumb into paranoia?
- 13
I'm on Observation Duty 7
Single-player alternative to I'm on Observation Duty 3 — playable solo, no multiplayer required. Shares Indie with I'm on Observation Duty 3.
As an employee of a mysterious organization your job is to monitor live surveillance camera footage and spot anomalies using your sharp eyes and good memory. Can you survive the entire night shift or will you succumb into paranoia?
- 14
I'm on Observation Duty 8
Single-player alternative to I'm on Observation Duty 3 — playable solo, no multiplayer required. Shares Indie with I'm on Observation Duty 3.
As an employee of a mysterious organization your job is to monitor live surveillance camera footage and spot anomalies using your sharp eyes and good memory. Can you survive the entire night shift or will you succumb into paranoia?
- 15
LONELY, LUSTFUL, ARROGANT, HATEFUL
Single-player alternative to I'm on Observation Duty 3 — playable solo, no multiplayer required. Shares Indie and Adventure with I'm on Observation Duty 3.
Solve puzzles and conquer challenges in a brutal and unforgiving dystopic gameshow. Meet new friends along the way, get to know them and discover their motives. Can you keep everyone alive until the end? Are you after glory, love or vengeance?