Top similar games like DEMON SIEGE:

BLIMBLAU: KILL THEM ALL! is a fast-paced retro FPS where hordes of modified humans stand in your way. Shoot, destroy, and kill them all without mercy.

Blast through zombies in this classic wave based shooter. With three maps to make your last stand, how long can you survive?

Cosmic Dawn is a fast paced retro shooter that stays true to the golden formula of the genres classics while raising the bar with innovative monsters, weapons and a large variety of worlds to traverse.

Gnaw is a FPS where you fight an ever growing horde of monsters with a "gun-game" like model for earning new weapons. More kills will earn you stronger weapons. As time progresses, the monsters will become harder to kill and more agile, so take them out as fast as you can before they outpace you!

Bring down DEVILISH corporate overlords in this office themed retro FPS. Use office supplies (and much more) to slay your way through and escape HELLISH work spaces. Dismantle the Devil's workforce of twisted salary men, corrupted custodians, and possessed office sundries! Time to get that promotion

A dynamic retro shooter with intense arena battles and co-op mode! Gear up with pistols, assault rifles, and rocket launchers to annihilate hordes of mutants solo or with friends. Every arena is a new challenge, every firefight is pure action! Inspired by the FPS shooter legends of the '90s-'00s.

RIP. THEIR. HEADS. OFF. CrimSaw is a small, fast-paced, and deadly arena FPS with a ‘spin’. You can’t jump and only armed with a badass weapon. Charge, launch and recall your sawblade to slice up endless hordes of demons into pieces. Survive as long as you can and climb up the global leaderboard!

DISDAIN is a fast-paced, visceral retro-styled first person shooter, inspired by the legendary FPS games of yesteryear.

A Gothic horror FPS where you die in one hit. Battle the undead and servants of Abaddon in a new FPS built with old technology.

Team up with up to 4 players and take on endless waves of Nasty Zombies in a high-intensity, movement-focused boomer shooter. Use agility and smart positioning to survive semi-procedural maps and unlock permanent upgrades like Blessings, Miracles, and cosmetics.

Gory rail shooter filled with action, explosions, boss battles, weapon upgrades, demons and zombies ... lot´s of zombies.

Welcome to the island of innominis! On the island you can take part in an extreme hunt. But even in such a place, unforeseen circumstances can arise. It is with them you will have to face. Grab your weapons and go into the bowels of the island.

Grab your sawed-off, cast some sigils, and face the never ending nightmare head on in Venison County. Blast your old neighbors into undead venison giblets, master weapon specific active reloads, and limitlessly combine slain cultists' sigils for their sinful buffs (if you can withstand God's wrath).

Death is only the beginning. Crawl from your grave and gear up to fight your way through the ranks of a mysterious and twisted cult. You, your guns, and your dynamite will have to shoot, slide, blast, duck, dodge, and maybe throw a gib or two to survive in this old-school-inspired shooter.

Two New, 32-Level DOOM II Episodes. Evilution: Far from earth, the UAC recommenced their experiments on on of the moons of Jupiter. A spaceship, mistaken for a supply vexxel on radar, hovered above the base. Hideous demons poured out, blanketing the base with death. All your comrades were quickly slaughtered or zombified.

A first-person survival shooter with apocalyptic simulation elements, focused on precision and headshot mechanics. Every shadow hides a deadly threat. Survive the night, manage your ammo, and fight off ever-increasing waves. Do you have what it takes to resist?

CROSSBOW: Bloodnight is a frantic score-attack arena shooter set in a world of camp horror and gore. Master the occult powers of your automatic crossbow and fight for every second of survival against a relentless demonic horde! Hunt. Die. Hunt again.

After Dark is a first-person endless wave zombie shooter set across multiple locations. Survive as long as you can against relentless hordes of the dead in a fight that only ends when you do.

Ultraviolent, fast-paced, merciless retro FPS action. Slaughter your way through nightmarish industrial mazes, transformed cityscapes, and surreal alien structures to cut down the Growth.

Survive in a world full of darkness. Gain resources. Kill entities. Repeat. But beware, there might be entities lurking around...

Battle your way through the dense zombie crowds as you struggle to survive! Inspired by classic zombie movies and FPS games from the 90s, the overwhelming combat will keep you on your toes!

A fast-paced gothic arena FPS focusing on stellar game feel. Survive as a gunslinger against waves of monsters, utilising smooth and expressive movement, sliding, rocket jumping, and formidable duel handguns.

An abandoned super soldier wakes up after 20 years of being trained while sedated. Because of her abandonment she managed to develop free will and she sets out on a journey to wreck destruction upon the masterminds behind her upbringing.

You've set on a journey to meet your wife, leading you to this hospital facility where they are experimenting on making humans immortal. It's all up to you now, take charge of unveiling the mystery, survive the undead and manage your inventory as you try to make your way out. Do you dare?

Use a rearview mirror to fight through a horror-filled hellscape in this Doom-inspired retro-fps. Shoot behind you, detect invisible enemies & never fall victim to enemy traps.Find new weapons, unlock abilities & warp to maps at any time!Objects In Mirror Are Closer Than They Appear!

ACHERON is a fast-paced, brutal old-school FPS inspired by Quake, blending brutalistic architecture, Lovecraftian alien horrors, and Hellraiser-esque nightmare fuel in a gritty PSX-style aesthetic.

Introducing the Master Levels for DOOM II. Twenty never-before-seen levels all with the same acid drenched, hell spawned horror of the originals. Each was created by independent designers and supervised by the demented minds of id Software. You might as well forget about seeing the light of day ever again.

Embark on a distorted journey as Voidwalker, battling chaotic entities and unraveling secrets to save your universe. With retro graphics and the Quake engine, brace yourself for intense first-person shooter combat.

A nerve wrecking struggle against industrialized human sacrifice, and an army of flesh husks in the deepest reaches of human understanding.

Trapped in a decaying prison overrun by the undead, you must fight, scavenge, and survive. Undead Sentence is a retro-style survival horror FPS with brutal combat, atmospheric levels, and zero forgiveness.

In this game you have to fight your way through hordes of zombies in search of a safe place.

You are Donovan Ling, a police officer and one of the last living souls in a city decimated by a demonic onslaught. Fight against relentless hordes of the undead, nightmarish horrors and hellish entities as you attempt to unravel the mysteries behind the invasion and escape with your life!

Beneath is a Lovecraft-inspired survival FPS. Scarce ammo, merciless enemies and a sense of the unknown combine in a 10+ hour, story-driven single player campaign, built for both veteran gamers and those seeking a challenging old school experience.