Top similar games like RIO - Raised In Oblivion:

Dead Alliance™ is a fast-paced, multiplayer first-person zombie shooter set in a post-apocalyptic world, where former military bases have been turned into the only remaining city-states.

After a rampant viral outbreak causes global society to collapse, you must survive the harsh wilderness of the Canadian Rockies amidst vast hordes of Infected and rival survivors.

In Anarchy Wolf's Law, you fight for resources with dynamic battles, territory grabbing and economic business opportunities.

Survive in a procedurally generated PvPvE world with friends in first-person. Complete quests, craft weapons, build bases, and wreak havoc on enemies.

Hellbreach: Vegas is a Wave-based First-Person Shooter for 1-4 players, made with passion by a one man dev team! Set your loadout, kill, and earn cash. Take a spin on the various slot machines and level up to improve your survival chances. Are you ready to try your luck?

How long can you survive a post-apocalyptic world? A land overrun with an infected "zombie" population, where you compete with other survivors for limited resources. Will you team up with strangers and stay strong together? Or play as a lone wolf to avoid betrayal? This is DayZ – this is your story.

Round-based 1-4 player co-op zombie FPS, where you survive endless rounds of zombies that get tougher every round. Unlock and upgrade gear between missions in the PlayerHub!

From Valve (the creators of Counter-Strike, Half-Life and more) comes Left 4 Dead, a co-op action horror game for the PC and Xbox 360 that casts up to four players in an epic struggle for survival against swarming zombie hordes and terrifying mutant monsters.

Open world, multiplayer, zombie survival game where you battle the undead in a hostile environment. Explore the the hidden secrets of the moon and find a escape from the horrors that await.

Anarchy: Wolf's law : Prologue - is a free limited version of the game. The constant struggle for control of the territory between living people.

A Single and cooperative game for 4 players, you are a fighter of a special purpose unit, your task is to destroy waves of zombies by taking convenient positions and using tactic

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.

Set in the zombie apocalypse, Left 4 Dead 2 (L4D2) is the highly anticipated sequel to the award-winning Left 4 Dead, the #1 co-op game of 2008. This co-operative action horror FPS takes you and your friends through the cities, swamps and cemeteries of the Deep South, from Savannah to New Orleans across five expansive campaigns.

The Day Before offers players a uniquely reimagined journey into post-apocalyptic open-world MMO survival set in the present day on the US East Coast following a deadly pandemic.

The Outbreak is a third person, coop, intense and challenging survival shooter in a massive open-world. Survive at all cost and experience a constant threat. Whether it is the lack of resources or creatures chasing you.

The chances of you surviving this all out war of society and the undead are slim to none. Already, there are millions of the walking dead shambling about, searching for food to eat. There's no known cure. One bite can possibly end it all for you. However, you aren't alone in this nightmare.

Battle the undead in this thrilling First-Person Zombie Shooter with robust character progression and weapon customization. Set around World War II, take on fast-paced missions as one of four survivors, each with their own unique abilities and role in Co-Op.

Step into DEAD METRO, where each boundary hides a new world. Survive relentless zombies, shifting landscapes, and unpredictable alliances. Adapt or perish.

Survive the Nights is a unique FPS survival game focusing on teamwork, fortification, creativity & strategy. Secure a structure or roam free, the choice is yours. Gameplay focuses on realistic survival, post zombie infestation. Prepare during the day for nightfall. How many nights will you survive?

A horror social deduction game where you and your friends take on the roles of police officers on a critical mission. But there is a zombie among you that can transform at will. Can you trust your friends?

Once a prosperous city Istanbul is fallen. Prepare your gear, defeat zombie hordes and reclaim your hometown. Uncover hidden story behind the disaster and learn what controls the zombies. Select your side between military and rebels and fight for the control of the city.

In KILLING FLOOR 2, players descend into continental Europe after it has been overrun by horrific, murderous clones called Zeds that were created by rogue elements of the Horzine Corporation. 6-player Co-Op & 12-player VS Zed-slaughtering mayhem.

Broken War is an intense first-person shooter that combines different multiplayer modes.

Back 4 Blood is a thrilling cooperative first-person shooter from the creators of the critically acclaimed Left 4 Dead franchise. Experience the intense 4 player co-op narrative campaign, competitive multiplayer as human or Ridden, and frenetic gameplay that keeps you in the action.

A photorealistic multiplayer horror game where you have to survive increasingly difficult nights. Unless you'd rather be the nightmare of other players ?

Ready for the next generation of 3rd person shooters? Hazard Ops has zombies, monsters, robots, dinosaurs, mechs - pretty much anything you can point a gun at. Sink your teeth into this action-packed online shooter!

Escape From Zombies is played alone or in cooperation, on a map where the player(s) must repel waves of zombies. It should be noted that the game does not end until all players are dead, the main goal is to beat the record of survived round.