Games like DethQuake

Flat Zombies: Defense&Cleanup is a single-player shooter that challenges you to clear building corridors from relentless zombies. Featuring ingenious game mechanics and perfect graphics, it combines a good story with intense action. Although enjoyable, the experience is occasionally disrupted by annoying ads.

"Quake is a dark fantasy first-person shooter, offering an updated version of the classic 1996 game. Experience the original campaign with up to 4K resolution, enhanced models, and improved lighting. Play as Ranger, battling corrupted knights and twisted creatures across four dimensions to collect magic runes."

"Revulsion is a single-player action game with classic Doom and Quake style gameplay, offering around 10 hours of playtime. It combines loot-based shooting with crafting and repairing mechanics, and features both hand-crafted and randomly generated level design. The game aims to challenge players without being unfair."

DOOMED is a single-player shooter game with a brutal, sci-fi atmosphere. After waking up from hyper sleep, you must escape from a dangerous environment filled with lurking terrors. With challenging gameplay, awesome soundtracks, and a dark, rusty setting, DOOMED offers a thrilling experience for even the most hardcore gamers.

"MOTHERGUNSHIP" is a Sci-Fi shooter game with bullet-hell intensity and exceptional gun customization options. Experience a thrilling story in single-player, or team up with a friend in 2-player co-op mode. Despite some bugs and grinding, the game offers a delightful visual and sound experience, with high replayability due to its randomized mayhem and unique gun-crafting system.

"Retchid is a single-player Action game with 6 hours of playtime, offering an atmospheric First Person Shooter experience with cosmic horror influences and Mesoamerican themes. As a TEC Engineer, retrieve classified research data and encryption keys from a nefarious discovery deep within a Mining Facility on Titan, Saturn’s largest moon, whileMeeting intense and visceral combat."

"Painkiller: Black Edition" is a first-person shooter game that combines a gothic storyline with fast-paced action. The game features a wide variety of hellish monsters and enemies to battle, with graphically advanced environments and the Havok 2.0 physics engine for realism. Players must fight their way through hordes of enemies in a battle between Heaven and Hell as a pawn in the infernal conflict. The Black Edition includes the original game and the expansion pack, "Battle Out of Hell," with 10 additional single-player levels and new villains.

"Blood: One Unit Whole Blood" is a horror shooter game with both single-player and multi-player modes. It boasts a good story, compelling game mechanics, and a unique atmosphere, accompanied by pretty visuals, amazing music, and humor, despite being full of bugs. The game follows the player's quest for revenge against a dark god named Tchernobog, battling zombies, gargoyles, and other horrors in a bloody rampage.

"Iron Storm" is a first-person shooter set in an alternate 1964, where World War I never ended. You play as a British soldier named James Anderson, fighting in the trenches of Europe against the German and Russian armies. The game features a unique time-travel element, allowing you to alter the course of the war. With a variety of weapons and environments, "Iron Storm" offers a fresh take on the traditional shooter genre.

"Experience the classic horror-themed FPS, Blood, with Fresh Supply's enhanced features such as updated graphics engine, support for higher resolutions, and customizable controls. This version includes the original game and add-ons, Plasma Pak and Cryptic Passage, with extended modding support and improved netcode for up to 8 players. Arm yourself and prepare to defeat the evil Tchernobog in this atmospheric, horror-filled game."