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.
Dark Trip is a gothic horror escape room where you use wicked biomachinery, strange art and your own hallucinations to solve the mystery of an eerie crime. Explore strange rooms, inspect occult locations and laboratory machines, reveal hidden clues through altered visions. Play flat or in VR.
- 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
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.
- 7
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.
- 8
Below, Rusted Gods
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.
You are the lifeline supporting an expedition into the unknown. Keep both yourself and your squad alive by interpreting instrument readings, explore the facilities, and uncover something ancient and eager to be born.
- 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?