Games like LeechTank

Beyond Citadel is a single-player FPS blending 90’s classic gameplay with anime-style 2.5D graphics and realistic gun mechanics. Players control the Martyr, journeying through the fallen Citadel to overthrow the Apocalypse’s rulers using diverse, condition-sensitive weapons. Explore handcrafted indoor and outdoor levels while facing challenging foes in a post-apocalyptic world.

"Dino Trauma is a survival horror game inspired by '90s classics like Doom, Quake, and Dino Crisis. Players can battle through dinosaurs and prehistoric creatures with a wide range of weaponry in levels that combine '90s design with modern standards. Join the Discord for development updates and more information."

"Putrefaction" is a horror shooter game with fast-paced, adrenaline-pumping action and tons of enemies with different behaviors. As a member of an elite force, you must find the source of a disease causing horrifying body transformations in an abandoned base and underground facility. The game features old-school gameplay with a variety of weapons, boss battles, and two game modes, offering around 8 hours of playtime. However, the plot is lacking and can be boring at times.

In "Concrete Visions," explore a deserted town filled with dangerous enemies in this first-person psychological thriller. With survival horror, FPS, and beat 'em up elements, combat is primarily melee-based and utilizes firearms. The game features a chilling atmosphere and disturbing visuals, with the goal of creating a replayable experience for horror and retro FPS fans. Your mission is to survive the night and uncover the truth behind the cult leader, Malone.

Eldritch is a single-player horror shooter game with first-person action inspired by roguelikes, immersive sims, and H.P. Lovecraft's works. The game boasts awesome gameplay, a good story, pretty visuals, and an exceptional soundtrack. With randomly generated levels, unlockable shortcuts, and replayable content, Eldritch offers a challenging and immersive experience filled with humor and atmospheric dread.

Receiver is a single-player horror shooter game with an intriguing story, wonderful gameplay, and masterful music, despite being somewhat grindy, hilarious, and buggy. Players must navigate a building complex filled with turrets and drones, using detailed simulations of various firearms while avoiding the Mindkill event. The game offers ballistic modeling, audio tapes on gun operation, and tense atmosphere, making it highly emotional with lots of replayability.

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.

In Quartermain and the Cult of Cthulhu, you must recover the powerful Ostium Magicae artifact from Nazi Germany before it falls into evil hands. This fast-paced retro FPS combines intense combat, massive levels, and a vast arsenal, challenging you to battle Cthulhu’s minions and punch Nazis in the face. Adventure and secrets await in this thrilling boomer shooter.

HOLE is a unique single-player action FPS featuring low-resolution graphics, gun-jamming mechanics, and endless enemy spawns across three challenging stages. Despite a poor storyline and poor optimization, it offers excellent game mechanics, a distinctive atmosphere, and high replayability for those seeking a short but intense, grind-heavy experience with a touch of humor.

Fear the Timeloop - Prologue is a third-person survival horror where you play as Sheriff James Cooper, trapped in a deadly time loop. Severely injured, he must manage his wounds and evade bloodthirsty monsters to escape a hostile building. The game features branching dialogue, flexible abilities, and exploration that deepens with each loop.