Games like 3XTINCTION

Red Solstice 2: Survivors is a real-time strategy game that combines single-player and multiplayer co-op modes for 2-8 players. As the leader of a secret task force, command your squad to fight against STROL mutants and find a cure for the virus threatening mankind. With deep strategy and engaging combat, quickly make decisions to survive in this harsh world. The game boasts marvelous mechanics and beautiful visuals, but be prepared for some grinding and bugs.

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.

Painkiller is a sensational shooter featuring phenomenal game mechanics, stunning visuals, and a good soundtrack that create an immersive gothic atmosphere. Battle hordes of demons and titanic terrors across vast, richly detailed biomes, solo or in co-op with up to three players. Utilize classic and new weapons, tarot cards, and agile movement to stop the fallen angel Azazel and earn your salvation.

"Deadstone is a Sci-Fi Role Playing game where players assume the role of a private security operative, Blake, stranded near the Mars colony of Deadstone during an outbreak. The game features both single-player and local multi-player modes for up to 2 players in co-op, with a split screen option. In the story-driven Campaign, players must defend against an unrelenting enemy and save the colonists, or test their survival skills in the Survival Mode."

In Solstice Chronicles: MIA, players navigate a dead colony on Mars as a corporate marine with an insurgent drone as an ally. The game features challenging twin-stick combat against mutants and other enemies, and requires strategic decisions to manage threat levels, scavenge for supplies, and upgrade weapons. The goal is to survive and uncover the colony's dark secrets.

Return to the world of free-to-play 4-player co-op survival horror with classic gameplay, strict inventory management, crushing enemies, horrific difficulty and more as you and a group of survivors try to survive the epidemic.

How to Survive is a zombie-themed survival game where you'll need to navigate through a deadly island, scavenge for resources, and craft weapons to defend yourself against the undead. With a distinctively dark humor and a challenging crafting system, players must strategize and make difficult decisions to stay alive. Owners of the first game receive a special armor set as a bonus in this standalone version.

The Strange Brigade Deluxe Edition includes the base game and Season Pass, granting access to additional campaign missions, playable characters, weapon packs, and more. In this 1930's-era adventure, players join the Strange Brigade to battle the undead army of Seteki, the resurrected Witch Queen, across diverse Egyptian locations. Solve puzzles, discover treasure, and experience thrilling third-person action.

In "Zombie Builder Defense 2," team up with up to three other players to build and upgrade fortifications, battle unique bosses and enemies, and unlock an arsenal of weapons across six different environments. Cooperate and strategize to survive in this post-apocalyptic horde survival game. Unlock character and weapon skins, bullet tracers, and other rewards as you advance.

"Fortified is a thrilling strategy shooter set in a 1950s retro sci-fi world, where players defend Earth from a Martian invasion. Combining third-person shooter, real-time strategy, and tower defense mechanics, players can enjoy single-player, co-op, or multiplayer modes, building defenses and wielding an arsenal of Cold War-era weapons. Protect the city against towering attackers and experience an exciting blend of gameplay styles for a unique and immersive adventure."