Top similar games like Testbed Terror:

High Hell is a neon-soaked, arcade-action first-person shooter from Terri Vellmann (Heavy Bullets) and Doseone (Enter the Gungeon, Gang Beasts).

Serious Sam Classic: The Second Encounter is a high-adrenaline single-play and 16-player co-operative arcade-action FPS and Gamespot's Game of the Month February 2002!

Serious Sam is a high-adrenaline single-play and 16-player co-operative arcade-action FPS and Gamespot's Game of the Year 2001!

A revenge shooter with manual reload mechanics and fully-simulated physics-based enemies.

Sniper Fury is an action-sharpshooting game set in a world threatened by violence. Neutralize threats using an ever-growing arsenal of modern firepower. Customize everything: weapons, gear sets, bullets! Join other snipers in Clan Wars, challenge them in PvP mode, & try events for extra surprises.

Step into the boots of Grayson Hunt after a crash landing on an old resort planet forces him to make a hard choice: survival or revenge. Execute masterful kills with Bulletstorm: Full Clip Edition’s unique combat system that rewards you for performing the most creative and deadly kills imaginable.

Half-Life Deathmatch: Source is a recreation of the first multiplayer game set in the Half-Life universe. Features all the classic weapons and most-played maps, now running on the Source engine.

A fast, focused retro FPS. Fight through 30 missions with tight gunplay, no filler, and a grim story you can choose to follow or ignore. No upgrades. No distractions. Just a weapon, a target, and the consequences that follow.

You Have A Delivery is a stylized, fast-paced FPS action game, inspired by action-comedy films. Take down the mafia in one night: rip apart your enemies, unlock guns and perks, and deliver unstoppable chaos. You're the only one who can pull it off. Can you deliver it?

Survival Horror set on a sinister island. As a lone forest keeper, you'll unravel its grim secrets from the eerie backstory of a royal vacation home turned nightmare. Journey through the changing seasons, from day to night. Confront nightmarish abominations that emerge in the winter cold.

Maze slaughter is a fast paced, rogue-lite first person shooter in a maze with piling bodies. It's like running man, in an american gladiator arena setting. Loud, gory and funny.

Days of War is an online FPS that re-imagines the team-based, close quarters, nonstop action of classic World War II multiplayer shooters.

Tired of playing fancy games that have lost all their mystery? Looking for something different? Look no further. Bordermind is a retro horror-themed FPS with a PSX/PS1 aesthetic. It takes the player into an intermediary world between the material and the spiritual.

Become a Hired Gun. The money’s good, the dog’s loyal, and the gun’s reliable. Embark on a fast-paced, violent, and thrilling FPS set in the darkest reaches of Warhammer 40,000’s most infamous hive city.

The Rock Map Pack is Now Available! Join the Resistance, stand united and fight for freedom against an overwhelming military force.

Join private investigator Jack Pepper on a guns blazing, jazz-fueled adventure in MOUSE: P.I. For Hire. MOUSE combines the charm of hand-drawn rubber hose animation inspired by the classic cartoons of the 1930’s with the adrenaline and action of an explosive first person shooter.

BLOCKADE War Stories .VR takes you to various moments of the Great Patriotic War, now with full immersion in virtual reality. Take part in the defense of Moscow, fight in the ruins of Stalingrad, carry out sabotage behind enemy lines and complete the path to Victory in Berlin.

You wake up and find yourself in the midst of a psychotic infestation, and gotta find a way out and avoid being chewed up into a red paste...

Nostalgic multiplayer fps game you used to play in the 2010s! Play online with bots or online with friends, collect weapons, and get the best score! Feel the energy of the fast-paced gameplay, huge amount of maps and items and become legend!

Serious Sam is a high-adrenaline arcade-action shooter heavily focused on frantic action. In a world where cyberpunk meets fantasy-fiction and advanced technology is mixed with black magic and psycho-powers, Sam travels through four beautiful worlds, confronting countless foes on his way to Mental's base.

Insurgency: Sandstorm is a team-based, tactical FPS based on lethal close quarters combat and objective-oriented multiplayer gameplay. Experience the intensity of modern combat where skill is rewarded, and teamwork wins the fight.

Kids, play Noob Squad and begin now to enter the ranks of the losers... the only important thing is to play and have fun!!! Yeeeeeeeeeeeeee!!!!11111ONE!!111

LOEK is a FPS where the goal is to shoot farm animals with a rocket launcher.

Garbage Day is an open world sandbox game, in which you are stuck in a time loop (meaning you live the same day over and over). In this game you have to explore and interact to find out how to get out of the time loop. You are open to do anything you want, kill innocent people, go to work, watch tv, go to the park, etc.

Sword With Sauce is a fast-paced stealth-action game where you pick weapons, gadgets, and a playstyle to eliminate enemies. Go in loud or stay unseen—it's your choice.

Play with your team and do your best!

Dive into Aftermath Z: Red Pine Lake, a survival horror game with a chilling 80s slasher vibe. Experience a gripping single-player story and thrilling multiplayer modes. Unravel the virus mystery, battle zombies in Horde Mode, or outwit the infected slasher in the unique asymmetrical Infected Mode.

Anger Foot is a lightning fast action FPS where the only things harder than your ass kicking feet are the ass kicking beats.

Enter a realm of nightmares and claw and shoot your way through hordes of bloodthirsty vermin and things that are much, much worse in this retro FPS

An intense first person shooter that delivers a twisted and gripping narrative of tragedy, modern crime drama, and supernatural horror.

Uploaded is a fast-paced, parkour, online multiplayer, and single-player shooter created by only one developer where you play as a robot with a human mind uploaded to it.

Ultra Damage is a hand-drawn Boomer Shooter packed with humor and action, featuring hand-crafted visuals and a story blending gritty detective work with absurd comedy. Each level is a wild ride. Unravel the mystery, find hidden clues, and deal ultra damage to save humanity!

Shrine II is a retro FPS game with a focus on atmosphere and exploration. Explore a nightmarish world and battle great bosses where the surprises never end...

Dragged into a dark conspiracy, explore and survive your way through the beginning of the end for the nation of Australia. Use your wits and instinct to stay alive in this 2000s-style first person liminal exploratory horror shooter set down under during the 1990s.