Locum Tenens (2025)

- Developer
- Deriv'era
- Platforms
- Windows, Linux
- Genres
- Action
- Rating
- 4.6 of 5, 12 player ratings
- Typical playtime
- about 2.3 hours
- Where to get it
- Steam
How it feels
A tense, claustrophobic retro shooter where you navigate a drifting spaceship amid an alien threat, relying on careful inventory management.
tenseatmosphericactionretro shooteralien horrorisolationsurvival
What players say
Players praise this as a faithful revival of the obscure Zero Tolerance, capturing its tough but fair challenge with autosaves and no save scumming. The atmosphere and soundtrack stand out, though some note jank like enemies shooting from outside render distance and rare softlocks.
Screenshots






More games like this
- Zero Tolerance Underground (2022)
- Terminal Breach: Final Dawn (2025)
- Entropy (2024)
- Cyberscape (2026)
- Zero Tolerance (1994)
- Niktophobia (2025)
- Zero Point Survivor (2025)
- Alien Protection (2023)
More by Deriv'era
This page is from Underplayed Gems, a catalog of older and overlooked games. Not quite it? Tell the Catbot what you feel like playing and it picks from the whole catalog, or browse by platform and genre.