Games like Doomsday Protocol

TurretGirls is a single-player warfare shooter where you defend Earth from mysterious alien invaders as Girl, a member of P.A.N.T.S.U. Upgrade your turret, build generators, and charge the superweapon to blast relentless waves of enemies. With fabulous mechanics, perfect visuals, plenty of grinding, and humor, it’s a thrilling and fun experience.

"Let Them Come" is a pixel-style survival shooter where you play as mercenary Rock Guner, tasked with eliminating alien hordes on a spaceship. Upgrade and customize your arsenal, utilizing FRENZY mode for maximum damage, as you face an onslaught of diverse enemies and boss creatures. Competitive players can climb online leaderboards and unlock new mixtapes as rewards for their shooter prowess.

DiscordSteamSTORY When the human revolutionaries failed in the fifth struggle against the Empire, they chose to find new lands and start over. On the way to find a new home, they encountered obstacles from the Empire, and also met Zerg warlords in the borderlands. Will the revolutionaries be able to reach their new homeland? GAME CONTENT There are currently about 3 hours of story mode game content…

In "HyperNova: Escape from Hadea", combine real-time strategy with tower defense to help the Scynthians escape their exploding star. Land the mothership, gather resources, research technology, and build defense towers to combat humorous beasts on the alien world of Hadea. With old-school sensibilities, this deep and diverse strategy game offers a unique challenge.

In "Infested Planet" , you command a small squad of soldiers against an overwhelming alien force, using strategy and tactical thinking to outmaneuver and outsmart the enemy. With 100,000 aliens closing in, you'll need to build defenses, equip your team with advanced weapons, and launch surprise attacks to capture and destroy alien hives. The ever-mutating alien army keeps you on your toes, demanding constant adaptation and innovation to survive.

In Solstice Chronicles: MIA, players navigate a dead colony on Mars as a corporate marine with an insurgent drone as an ally. The game features challenging twin-stick combat against mutants and other enemies, and requires strategic decisions to manage threat levels, scavenge for supplies, and upgrade weapons. The goal is to survive and uncover the colony's dark secrets.

"Devader is a shooter game with intense twin-stick action, offering a local co-op multiplayer mode for up to 2 players. With over 100 waves of challenging enemies, powerful weapons, and tailored upgrade paths, players can strategize to protect the core and unlock various endings. Experience superior graphics, phenomenal music, and an online leaderboard across four difficulty levels."

"Over 9000 Zombies!" is a frenetic first-person shooter where players must survive waves of zombies in various maps. Utilize a wide range of weapons, from pistols to grenade launchers, to annihilate the undead hordes and progress through the game's challenges. With online co-op mode, team up with friends to exterminate the zombie menace together. Fight for survival and prove your mettle against over 9000 zombies!

"Ardein.Fall" is a fast-paced Tower Defense game where you control your spaceship to protect the mothership against hostile aliens. With ever-changing enemies and challenges each day, and leaderboards resetting daily, players have a chance to become the best. Build defense turrets from enemy scraps and unlock new ones to control your playstyle in this easy-to-control, hard-to-master game with anime-inspired graphics.

"Protolife is a single-player Real Time Strategy game with a good plot and marvelous visuals. Players become a part of a cellular machinery, building defenses and upgrading towers using proteins and enzymes to protect the cell from infection. The game features keyboard controls, a manual for building and upgrading, and a team of developers including Alexey Grishin for code, music, and pirogi; Ruslan Kibets for code and PR; and Anatoly Sazanov for art and idea."