Games like Forbidden Ingress

"Guns n Zombies" is a thrilling post-apocalyptic game where you fight against hordes of robotized zombies infected by a nano-virus. With a variety of weapons, special abilities, and turrets, you'll embark on a dangerous journey through a randomly generated gameplay. The survival mode allows you to challenge yourself and compete with other Steam players, all while experiencing a true post-apocalyptic atmosphere.

In "Blood and Zombies," players take part in a thrilling fight for survival against hordes of zombies in this first-person shooter and tower defense hybrid. Choose one of four heroes, build up your fortress, and deploy various defensive structures to protect humanity's last stand. With each victory, upgrade your base and weapons to face even greater challenges in this post-apocalyptic world.

In "Rapture Rejects," a Battle Royale game set in the Cyanide & Happiness universe, 50 players scavenge for resources and fight each other after being left behind by God. With a top-down isometric perspective, the game offers accessible gameplay and unique character customization. The ultimate goal is to impress God and secure a spot in Heaven by being the last person standing.

Galactic Junk League is a free-to-play online game where players build and battle with their own custom spaceships. Engage in intense PvP battles in various game modes, collecting junk and blueprints to improve your ships. Join forces with other players in a cooperative mode to take down massive bosses and earn valuable rewards.

"God Mode" is a fast-paced, arcade-style third-person shooter game. Players take on the role of a descendant of ancient Greek gods, battling through hordes of mythological creatures in various locations. With a focus on intense action and upgradeable weapons and abilities, players must fight to reach the top of Mount Olympus and claim their place among the gods. The game features intense combat and cooperative multiplayer for up to four players.

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.

In How to Survive 2, players must navigate through a world overrun by a pandemic, several years after the events of the first game. With the infection now a global issue, survivors must do whatever it takes to endure while facing infected enemies. Returning players who own the previous games on Steam receive a special armor set called "Primal Fear," crafted from bones and scrap metal for improved protection.

Dead Effect is a sci-fi FPS game with over 5 hours of single-player campaign, featuring 12 missions and a gripping story. Survive against hordes of zombies in Survive and Biohazard modes, and explore multiple rooms for extra items and ammo. With a unique set of achievements and the special ability of Bullet Time, prepare for an intense and immersive experience.

"Yet Another Zombie Defense" is a top-down survival game where players build defenses and fight off hordes of zombies in various waves. Players can team up with others in online co-op mode, gathering resources, and improving their weapons and skills to survive the zombie onslaught. The game offers dynamic maps and various game modes, providing a challenging and engaging experience in this post-apocalyptic world.

"Contagion" is a horror survival game with dynamic gameplay, where each playthrough is unique due to its built-in randomization system. The game features state-of-the-art gore and immersive sound effects, bringing the dark atmosphere of a zombie apocalypse to life. Traditional zombies and various game modes provide an intense and addictive experience.