Games like Undead Fortress

"Sonar Shock" is a first-person dungeon-crawler with RPG elements, where you explore a Soviet super submarine filled with supernatural infestations. Customize your character and navigate through the submarine's four floors, collecting powerful weapons and uncovering its dark secrets. Interact with the crew, solve side-quests, and discover hidden treasures, all while facing your fears in this survival horror.

"The Consuming Shadow" is a survival horror game with roguelike elements. You play as a paranormal investigator, trying to stop an ancient evil from consuming the world. Battle cultists, monsters, and sanity-draining shadows in this challenging and intense game. With procedurally generated levels and tons of items to find, each playthrough is different and full of replayability.

"3DRPG is a single-player historical role-playing game with sensational graphics and a grind-heavy gameplay. The randomly generated world is filled with towns, dungeons, and recruitable characters, offering a JRPG battle system and various professions. As a lost soul in the Underworld, you must hunt down your killer to regain your life."

Witch Hunt is a cooperative online survival horror game where players assume the roles of demonologists, attempting to rid the world of evil. Players must investigate supernatural phenomena, gather resources, and work together to banish the witches they encounter. With a focus on teamwork, puzzle-solving, and combat, Witch Hunt delivers a thrilling and immersive multiplayer experience.

"Devilated" is a single-player "Mystery Shooter" game offering around 11 hours of playtime, with 30 levels and 30 bosses to battle. Unlock over 100 weapons and abilities, and enjoy an RPG-style inventory system with up to 20-40 hours of gameplay in New Game+ mode. Experience a thrilling mix of shooter and action RPG game graphing with brutal combat and over-the-top violence.

REDO! is a single-player Horror Platformer action RPG set in a non-linear, open world inspired by the works of Tsutomu Nihei and Lovecraft. In a dystopian world overrun by biomachines, you play as a girl fighting to survive, combatting enemies using a diverse selection of weaponry while navigating a dense atmosphere with a good soundtrack. The game features methodical combat, challenging environments, and unique enemy encounters.

"Unalive" is a roguelike action-adventure game where you must navigate through randomly generated laboratory rooms after being subjected to a deadly experiment. Collect unique items to enhance your abilities, avoid deadly traps, and defeat random boss encounters in a single, challenging playthrough. Every decision matters in this permadeath game, as death is permanent and there are no second chances.

State of Decay is an open-world survival horror game set in a zombie apocalypse. Manage a group of survivors, fortify your base, and explore a vast, dynamic world. Fight hordes of zombies, scavenge for supplies, and make decisions that determine your group's fate in this thrilling, immersive experience.

"Decision: Red Daze" is a post-apocalyptic, turn-based strategy game set in a world overrun by a mysterious red mist. As the leader of a survivors' camp, players must manage resources, make strategic decisions, and navigate tense negotiations while battling mutated creatures and hostile factions. With a focus on choice and consequence, players' decisions will shape the fate of their camp and the wider world.

In "Cards of the Dead," players fight through hordes of zombies across three interconnected stories to retrieve a vaccine and save humanity. The game features multiple weapons, from makeshift bottles to futuristic experimental guns, and requires strategic management of health, turns, and equipment to survive.