Games like Relow

"Toxikk is a Sci-Fi shooter game with smooth gameplay, impressive visuals, and a great soundtrack, reminiscent of 90's FPS classics. Enjoy 2-player co-op, single-player, or multiplayer matches, with no competitive disadvantages for the free version. Experience all maps by earning XP and unlocking them, with a thriving community on Discord to answer any questions."

Sector's Edge is a fast-paced destructive voxel-based first person shooter in which two teams of 8 fight for zone domination across various planets.

AXYOS is a massively multiplayer shooter game with single-player and PvP modes, combining elements of classic FPS and MOBA. Players can upgrade their characters, complete objectives, and purchase weapons/items from an in-game shop. The game is still in development and may have bugs, but seeks to deliver an innovative experience by incorporating community feedback.

Beyond the Wire is a large-scale multiplayer first-person shooter set in the Western Front of the Great War. With up to 100 players in a battle, coordination and communication are key as you fight alongside your squad in intense, tactical combat. Utilize period-appropriate firearms and close-quarters melee combat to overcome the enemy and survive the brutality of the front lines.

Operation: Harsh Doorstop is a free, community developed, tactical shooter. Developed by the studio Drakeling Labs in partnership with MicroProse Software, Inc. Built using the OHDCore framework for Unreal Engine 4.

Bodycam is an ultra-realistic multiplayer FPS that immerses players in intense close-quarters combat through a unique body-camera perspective. This view forces tactical decision-making, sharp reflexes, and teamwork as every shot and movement counts. Photorealistic visuals and varied modes amplify the authentic, high-stakes experience.

Interstellar Marines is a tactical sci-fi First Person Simulator, inspired by movies like Aliens and games like Half-Life. It offers singleplayer and co-op/PvP gameplay, with dynamic environments and non-scripted AI. The game aims to evolve the FPS genre with its blend of sci-fi, role-playing, and military realism.

"Line of Sight" is a free-to-play modern military FPS with detailed customization options for characters and weapons. It features both classic shooter gameplay and unique Psionic abilities, with the promise of no pay-to-win elements. Players can adjust various aspects of their weapons, including optics, muzzle, barrel, ammo type, and more.

Reflex Arena is a competitive arena FPS that emphasizes raw skill and precision. With fast-paced gameplay, unique slide system, and map-wide teleportation, it offers a refreshing take on classic deathmatch and arena modes. The game also boasts a powerful map editor, allowing for custom levels and a vibrant modding community. Character count includes spaces.

Military Conflict: Vietnam is a tactical shooter game set during the Vietnam War. The game features a variety of weapons and vehicles from the era, and allows players to engage in large-scale battles in a variety of environments. Players can choose to fight on either the US or Viet Cong side, and must use strategy and teamwork to complete objectives and emerge victorious.