Top similar games like Frontline: Operation Kosmonaut:

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.

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!

Savage Gears is a violent, single-player alt-history Africa Cold War shooter. Armed with an Iron Fist and an arsenal of devastating weaponry, you play as Ero Lei'Bourne, a S.P.E.A.R. operative, in the middle of a dangerous conspiracy.

BRUTAL shooter focused on action, gore, and old school death metal music. Unleash your overpowered arsenal to goreblast hordes of ferocious beasts on your way through ancient dark forest.

You wake up as an army soldier in the middle of a mutant apocalypse, trying to figure out what the hell happened and blasting some heads on the way. Deadshot is a retro styled first person shooter inspired from classics like Half Life, Doom, Quake and many alike.

The chaos will never end. Decimate your enemies, fight against hordes of invaders who know no mercy. Dozens of enemy types await you. Old comrades will stand in your way. Shoot first and never ask questions.

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.

Experience the Half-Life™ expansion packs like never before. Operation: Black Mesa features reimaginings of both Half-Life™ Opposing Force and Half-Life™ Blue Shift through two unique campaigns. How will you survive the Black Mesa Incident? It's time to choose.

Snuff is a retro ego-shooter which was inspired by early 2000 games. You play as Dexter, a programmer and hacker who is hunted by followers of an underground organization. After barely escaping an assassination attempt, you decide to hunt down every single boss of the organisation.

So.... got what it takes to be a X Slayer?!?... 7 weapons, blood and gore, twisted music by Seepage & Psyko Syndikate, and maps where you can blow up everything. its awesome. started making it in 1998 in high school with my friend and now im 37, so i have life experience now.

BF:RI is a military tactical shooter and a work of historical fiction set in war-torn Burkina Faso. You are a CIA SAC Tier 1 operator, assigned to Operation Sahel Dominion, a covert manhunt targeting the Leader of the Sahel Caliphate responsible for an act of terrorism on American soil.

In this uncompromising first-person shooter, storm the Wolf’s Lair in 1944, the sealed-off power centre of the Nazi leadership. Fight your way through bunkers, defensive positions and Nazi troops using weapons, explosives and vehicles, and eliminate officers all the way up to Hitler himself.

Humanity has lost its war against the virus, a world where balance and order have been disrupted. A unit unaffected by the virus, dedicated to aiding humanity, has emerged. A courier whose path leads to New State. Will you be able to complete the delivery in the face of the challenges ahead?

The Revival is a story-based, tactical stealth First-Person Shooter game which is set in the near future. Get ready for covert operations. Play as a well-trained special soldier who fights on his own against his deadly competitors.

All Out War: Red Horizon is a large-scale first-person shooter with destructible environments, drivable and customizable vehicles, characters, and weapons. Its gameplay bridges the gap between milsim and arcade-style shooters, keeping mostly the fun highlights of warfare front and center.

SPRAWL zero is a fast-paced shooter inspired by the Golden Age of 2000s FPS. Survive a brutal cyberpunk city collapsing under military rule and cult fanaticism. Use your Gravity-Gloves, augments, and an arsenal of over 40 weapons to crush those who stand in your way.

Blood, Fuel, Ammo & Speed is a fast-paced roguelite FPS action game. BFAS is focused on highly brutal, stylish, and smooth gameplay. Rip the Demons apart with your various satisfying weapons and sleek movement patterns. Power up your Operator with numerous stat upgrades and items.

In 1944, you take on the role of Jason Miles. On behalf of the OSS, you are sent to a waterworks near the Schneiden in the heart of Germany, because according to reports, a Nazi scientist is researching how to resurrect fallen soldiers as ghosts.

1987. The Soviet Union is cracking from within. As special agent Dan Morris, navigate a world of shifting loyalties, covert operations, and ideological fractures in this story-driven Cold War FPS.

RoundZ is a solo-developed round-based survival zombie game, with each round becoming progressively harder as the zombies get more health and in bigger waves. 

Stay close together and use teamwork to fight through hordes of infected and other mutated freaks while navigating between saferooms.

You’re an Operator in a covert underground facility, researching advanced military and alien technology. A routine day takes a sinister turn... Fight hostile creatures, explore alien corridors, and uncover the mystery as you struggle to survive