Top similar games like Rules of Engagement: The Grey State:

Explore the lost colony of Tau Ceti IV, scavenging valuable loot in a high-stakes survival first person shooter from the creators of Halo and Destiny.

HUNTERS: Uprising is a hardcore, tactical PvPvE first-person shooter. Track and kill dangerous alpha monsters in the infested zones around the world, kill nightmarish monsters and outwit other players - alone or in a group. Then rest in the safe zone, upgrade your base, hunt, fish and survive.

Infiltrate breached SCP facilities in this tactical co-op horror extraction shooter. Survive surreal anomalies, recover forbidden intel, and escape.. or lose everything. The deeper you go, the stranger and deadlier it gets.

Escape from Tarkov is the original extraction FPS where every raid is a gamble with death. Prep your raid, bleed, endure and fight through ruthless PMC players and Scavs, gain tactical advantage and cling to your loot — only extraction decides if you live or lose it all.

A cosmic-horror extraction shooter. Drop in, loot up, and get out alive: raid decaying zones for gear, survive the monsters lurking inside, and escape before the dark closes in. Solo or up to three, with other Deviants hunting the same loot.

A co-op survival horror shooter against an AI that learns from your actions. It grows more dangerous, relentlessly hunts you, and turns mistakes into deadly traps. Hide, hack security systems, and work together to survive.

Welcome to Off The Grid, the next-gen free to play Battle Royale from visionary director Neill Blomkamp. Set in a near-future world where contestants are cybernetically augmented and dropped into televised bloodsport. Death is temporary, but fame is forever.

The Year is 2028. You are a Survivor, one of the few left amongst the living dead. You must Fight to Survive in this Hardcore Shooter based in Post-Apocalyptic America. Will you help to rebuild humanity, or take what they've gathered for yourself? We The People refuse to go quietly into the night!

SCP: ReEnter is a free, asymmetrical multiplayer FPS set during a massive containment breach. Players are randomly assigned to Humans or SCPs. Fight to secure the facility, escape, or slaughter everyone with seven playable anomalies.

Tactical extraction shooter meets immersive survival horror. Play as rival mercenaries fighting for loot, or as alien monsters hunting humans from the shadows. Solo or with friends, experience this unique dark take on asymmetrical PvPvE multiplayer.

Escape together or die alone. A relentless creature is hunting you in this intense co-op bodycam horror experience. Communicate. Stay quiet. Survive. Every move matters. Every sound could be your last. Made by one developer.

Deep within a secure underground facility, a sudden containment breach allows many of the secured anomalies to escape from their chambers. Assist the Foundation in re-securing the facility, help the Insurgency in their goal to capture it, or wreak havoc as an SCP in a frantic bid to escape.

In this hyper-realistic multiplayer horror game, one player starts as The Hound, while up to 15 players are human survivors trying to hide. Navigate through hyper-realistic environments, and experience the ultimate survival horror experience in multiplayer.

A terrifying multiplayer horror experience set in the Backrooms. Four survivors against player-controlled mannequins that can only move when nobody is watching!

Cry of Fear is a psychological single-player and co-op horror game set in a deserted town filled with horrific creatures and nightmarish delusions. You play as a young man desperately searching for answers in the cold Scandinavian night, finding his way through the city as he slowly descends into madness.

Hunt: Showdown 1896 is the brutally rewarding extraction shooter. Track twisted monsters and overcome ruthless PvP. Take bounties in corrupted backwaters lost to history. With a team, you might survive. Die with nothing or get out with everything.

Beautiful Light, a PvPvPvE tactical first-person extraction shooter where 6 squads of 3 operators are tasked with entering, securing, and extracting an artifact in a hostile, horrific environment. Face other operators and player-controlled anomalies, but beware: mistakes can risk your life and gear.

THE WASTE – a brutal and stylish action game about bloody street shootouts and survival in a city after a global collapse, where authority has fallen, and crime thrives. Two factions fight for control over the city, its resources, and survivors.

Step into the role of Z1, a mercenary unit to search for evidence of an alien species that is invading a space station, an immersive bodycam style first-person shooter, solo or up to 5 players.