Games like Abyssal Mayhem

"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."

Serious Sam’s Bogus Detour is an all-new action-adventure in the legendary Serious Sam saga from Hammerwatch developer Crackshell. Battle through beautiful Mediterranean locales, dangerous biological weapons labs and even high-tech moon bases as a one-man wrecking crew or in four-player online cooperative for maximum chaos! Dominate the chaotic Survival and Versus modes or make your own mods, mode…

"Alien Rage: Unlimited" is a sci-fi first-person shooter where you battle against hordes of alien enemies on Mars. With fast-paced action and destructible environments, the game offers a variety of weapons and upgrades to customize your arsenal. The "Unlimited" edition features enhanced graphics and additional content for an expanded gaming experience.

Serious Sam 3: BFE is a fast-paced first-person shooter set in a fictional, ancient Egypt. Armed with a vast arsenal of weapons, players confront hordes of hostile alien creatures in frenetic combat across diverse environments. The game features single-player and multiplayer modes, with expansive level design and challenging enemy encounters that emphasize action and survival.

"Rift Loopers" is a twin-stick shooter survival game with rogue-like elements, where you battle an alien insectoid race across alternate realities to collect reality crystals. Use these crystals to unlock new abilities, characters, and weapons in your fight for survival. Level up to enhance abilities and customize your playstyle.

Waves of Death VR Kill Or Be Killed! Following a tragic error by scientists working for the army, a viral compound, never before seen, spreads across the city, bringing the dead back to life. All the dead… Ever since, terror has gripped the area, prey to sudden attacks from zombies, skeletons and genetically modified monsters, who have escaped from the cemeteries and a secret army laboratory to …

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.

Missile attacks that automatically pursue enemies, switching control to a companion who will not be knocked down, etc. This is a third-person action game in which the player fights using slightly peculiar abilities.

"Vampire Hunters" is a rogue-lite retro FPS where you stack guns to take down monsters with massive firepower. Explore Transylvania's steampunk environments, upgrade weapons, and slay hordes of undead in corridor-like levels. Your goal: become the ultimate Vampire Hunter.

"Band of Defenders" is a tower defense game where players work together to protect a base from incoming hordes of enemies. Players can set up barricades, traps, and turrets to defend the base, and can also take control of characters with unique abilities. The game features a variety of missions, enemies, and environments to keep the defense strategies fresh and challenging.