Games like Killing Floor 2

"Killing Floor" is a cooperative survival horror game set in wave-based scenarios. Players fight off hordes of enemies, known as Zeds, using a variety of weapons. The game features a class system, where players can specialize in different roles to better survive the onslaught. As players progress, they can earn money to buy better weapons and equipment for the next wave. The ultimate goal is to survive all waves and defeat the boss Zed.

"World War Z: Aftermath" is a co-op third-person shooter game based on the film, where players battle swarms of hundreds of zombies in fast-paced gameplay across various locations worldwide. The game features a new first-person mode and gore systems for satisfying action. Humanity is on the brink of extinction, and players must band together to defeat the horde and outlive the dead.

"Back 4 Blood" is a cooperative first-person shooter where players fight against a zombie apocalypse. Players can team up with up to three others to clear infested areas and battle powerful enemies, utilizing a wide range of weapons and abilities. The game features a dynamic card system that affects gameplay, adding an extra layer of strategy to the intense action.

Warhammer: Vermintide 2 is a 4-player co-op game set in the Warhammer Fantasy Battles world, where you fight against the combined forces of Chaos and Skaven. The game features 15 careers with unique abilities, talents, and weapons, as well as new enemies, talent trees, an improved loot system, and the Heroic Deeds System for unique scenarios and trials. The Premium Edition includes exclusive items and decorations.

Zombie Army 4: Dead War is a horror shooter game that offers both single-player and multiplayer modes, with up to 4 players in co-op. The Deluxe Edition includes the main game, additional character pack with Undead Airman playable character, weapon skin pack in solid gold, a weapon bundle with FG-42 Semi-auto Rifle, and character outfit bundle with Undercover Karl costume. Fight against hordes of zombies in this thrilling game.

"PAYDAY™ The Heist" is a first-person shooter where players step into the shoes of a career criminal, pulling off intense heists alongside three other Co-Op partners. The game features six high-stake heists, each with its own challenges and objectives, and offers a massive character progression tree for building skills. With endless replayability, hostage trading, and additional DLC content, "PAYDAY™ The Heist" provides a thrilling, action-packed experience.

"7 Days to Die" is a multiplayer action game set in a post-apocalyptic world overrun by the undead. It combines elements of first-person shooter, survival horror, tower defense, and role-playing games. Explore open-world environments, craft and repair weapons, build and customize fortresses, and cooperate or compete with other players in various game modes. Despite some bugs, the game offers a unique and immersive experience in a fully destructible world.

"Earthfall is a Science Fiction Shooter game with single-player and multiplayer co-op modes for up to 4 players. Battle an extraterrestrial invasion in the Pacific Northwest using futuristic weaponry and deployable barricades. Experience tense, procedurally generated gameplay and a well-crafted story across 15 levels."

Overkill's The Walking Dead is a four-player co-op horror shooter set in the post-apocalyptic Washington D.C. of The Walking Dead Universe. Each character has unique abilities, skill trees, and story arcs, with a focus on teamwork and strategic gameplay. The game boasts intense action, detailed graphics, and a wonderful soundtrack, but is marred by grinding, optimization issues, and annoying ads.

"Zombie Army Trilogy" is a third-person shooter game where players fight to save humanity from a legion of undead super soldiers in a post-World War II setting. The game features three campaigns across 15 missions, and can be played solo or with up to 4 players in online co-op mode. It also includes a heart-pumping new horde mode and remastered editions of the best-selling Nazi Zombie Army 1 & 2. The game is known for its intense and challenging gameplay, as well as its cult horror shooter series.