Games like Operation Save the Girl: Code X

"Kingdom of the Dead" is a rogue-like first-person shooter set in a sprawling, procedurally generated catacomb. Fight through hordes of the undead using a wide array of weapons, while managing your hunger and sanity. Your ultimate goal is to uncover the mystery behind the kingdom's decay and find a way to escape.

"Killing Room" is a first-person shooter game where players must survive waves of enemies in a mysterious complex. With a variety of weapons and enemy types, each playthrough is unpredictable and challenging. The game also features a unique "Judgment System" that adjusts the difficulty based on player performance.

"Monument" is a single-player fantasy shooter game featuring old-school FPS gameplay with huge hordes of monsters and an arsenal of weapons. Each level is unique, offering new challenges and enemies. The game boasts excellent graphics, a stellar soundtrack, and unique features such as a teleport gun and donar station for ammo. It's a fun and exciting game that will keep you engaged with its challenging levels and epic battles.

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.

"Wolfenstein: Youngblood" is a science fiction shooter game that offers both single-player and co-op gameplay, where players assume the role of BJ Blazkowicz's twin daughters on a mission to find their missing father in Nazi-occupied Paris. The game features open-ended gameplay with leveling, exploration, and a variety of customizable weapons and abilities. However, it is known to have grinding, bugs, and aggressive monetization strategies. Overall, it offers a unique atmosphere, humor, and high replayability.

"Vomitoreum is a single-player horror shooter Metroidvania game with an interesting plot, good gameplay, stunning graphics, and an ingenious soundtrack. Explore a dark, interconnected world inspired by the paintings of Zdzisław Beksiński, battling eldritch monsters and searching for a cure for a deadly fog. As the Nephilem, survive the harsh environment, gather weapons and tools, and restore life to the plagued land."

A.W.O.L. is a first-person, mil-spec shooter developed using the Build engine (Duke Nukem 3D, Ion Fury), specifically a modernized version of the Build Engine based on the "EDuke32" source port which allows for modern hardware acceleration and modern controls while retaining the original 2D pixel sprite graphics. Originally conceived as a passion project by a small Build Engine mod team in the ea…

"The Game of Annie" is an indie, third-person action shooter set in a world devastated by a mysterious virus. As Annie, players will use guns, bows, and melee weapons to combat both monsters and humans, with AI teammates alongside for support. Despite its rough edges as a first project from the developer, the game offers customizable characters and a mix of combat and training elements.

"Noct is a horror shooter game with both multiplayer and single-player modes, set in a post-apocalyptic world filled with terrors. The 2D top-down game features spectacular visuals, an excellent soundtrack, and a fabulous atmosphere. Players must scavenge for supplies, combat enemies, and survive in this persistent online world."

"Godstrike is a single-player 3D boss rush bullet hell game with unique mechanics where time is your health and currency. Unlock over 40 abilities and customize your loadout to create powerful combos and synergies. As Talaal, the last of God's seven masks, you must defeat powerful siblings and escape a never-ending war in this fantasy shooter."