78%Strong matchInterstellar Marines
52%4k52% positive reviews, Mixed across 4k reviews·FPS · Tactical
—




INFILTRATE, EVALUATE, ANNIHILATE. Working together or alone, exploit a time loop to gather information, create a plan, and neutralize a rogue intelligence system threatening to destroy humanity in this first-person sci-fi knowledge-based immersive sim.
Null Causality
SteamHumanity is on the doorstep of greatness: the year is 2084, and Project Genesis is nearly complete; a Dyson Swarm that promises to provide unlimited free power as a final solution to the growing climate crises and never-ending proxy wars. For nearly a decade, citizens of the Reformed United Nations have prospered from the energy and research provided by the project. Then, tragedy struck: War unchained…
Humanity is on the verge of collapse: the AI controlling the Dyson Swarm at the heart of Project Genesis has gone rogue. Our fate is in your hands. Assemble your squad or go it alone; infiltrate Vulcan station, the control point for the swarm, and neutralize the rogue AI…
Sneak, hack, or fight your way through several missions each with a variety of different obstacles and enemies. Investigate and plan your approach. Improvise, adapt, overcome all odds. Utilize the environment and resources to your advantage. Uncover the secrets of the future...
Missions are tightly crafted challenges that have one end goal given, with nearly infinite paths to reach it, and how you do is up to you. Each mission takes place in a unique map, with different goals, enemies, dangers, and stories to uncover.
Plan your approach. In between each mission attempt, review previously gained information and past experiences to decide what to try in your next run. Utilize the planning table to formulate movement plans for you or your squad, mark points of interest (such as caches of supplies), and write out your plan and objectives. Or just grab your weapons and rush in blind.
Customize your loadout. Before each attempt you have the opportunity to equip weapons and tools that suit your ideal playstyle or your mission goal, these include:
Or go in without weapons at all, ya mad lad.
And when you die, be glad for the mysterious signal that transmits the information from all past attempts to you as you plan your next attempt. Good luck, operative, we're counting on you.
Beware the Anomaly…
Steam data © 2026 Valve Corporation. Trademarks are property of their respective owners.
All matches
Finding similar games…
Interstellar MarinesShares Sci-fi · Shooter · FPS , adds Tactical52% · 4k positive reviews78%Strong match—
SCP: 5KShares Shooter · FPS · Combat , adds Horror79% · 15k positive reviews74%Strong match—
The AnacrusisShares Sci-fi · Shooter · FPS , adds PvE69% · 609 positive reviews73%Strong match—
DesecratorsShares Sci-fi · Shooter · FPS , adds Flight97% · 263 positive reviews75%Strong match—
X-Morph: DefenseShares Co-op · Sci-fi · Shooter , adds Tower Defense91% · 3k positive reviews72%Strong match—
E.Y.E: Divine CybermancyShares Immersive Sim · Stealth · Sci-fi , adds Cyberpunk84% · 6k positive reviews72%Strong match—All matches
The best games like Null Causality are Interstellar Marines, SCP: 5K, The Anacrusis, Desecrators, and X-Morph: Defense.
Match on: filter matches for Null Causality by tag
Filters all matches
65%+Strong matches