Top similar games like ZSG:

Space bounty hunter Falco must explore the solar system in search of his ex-girlfriend and destroy the Black Star cult. Collect bounties, upgrade your equipment, explore planets, crack wise & fight aliens in this GZDoom-powered Retro-FPS adventure.

The player takes the role of the last soldier of the highly specialized "Gastro Force", elite troopers trained to infiltrate the enormous alien guts to fight them from the inside!

Defend a forest watchtower against waves of monsters in a first-person survival shooter. Earn cash from kills, buy weapons and upgrades, fight flying gargoyles, and face bosses in dedicated arenas. Spend your last dollars on ammo or repairs? The next round will test your choice.

A retro and very cool fps game, blood-curdling fast-paced combat, high mobility displacement, adrenaline-pumping plasma effects, all in the most intuitive way to experience the aesthetics of violence!

A fast-paced arena shooter where you wield two weapons at once across unique battlegrounds. Each round is different: new map, teams, weapons, and modifiers.

War In Other Space, Role-playing game, first-person shooter, there are 15 maps in the game, smart enemies with artificial intelligence, cool Science Fiction Weapons and all this in other Space

Viscerafest is a Sci-Fi Fantasy Singleplayer Arena FPS with minor Collectathon elements. Fight through hordes of aliens and eldritch monstrosities wielding a slew of powerful weapons, juggling your resources, and exploring over 23 intricately designed hand-crafted levels.

Welcome to Crashout — the ultimate playground showdown. You’re armed with foam bats, toy blasters. The goal? See how long you can survive against waves of increasingly rowdy students

Interlopers is a solo-developed FPS inspired by retro classics. Wield big guns, shoot hordes of enemy robots, and explore hand-crafted levels set on multiple alien worlds.

Arsenal Shock is a fast-paced singleplayer arena dual-weapon shooter. Use a multitude of weapons to fight off endless waves of enemies and achieve new high scores in 11 diverse mayhem-filled arenas. Also includes two Playground levels with gravity gun functionality.

Lock and load into the Starship Troopers universe and join the Mobile Infantry in the most realistic depiction of war ever made! Experience an original story in this action-packed, first-person retro shooter. Would you like to know more?

Play as the Sourman as you venture through the hostile jungles in this Retro-FPS Platformer!

Explore and fight your way through a crashed human spaceship infested with relentless hordes of aliens as you become more powerful with exciting weapon upgrades and powerups in this retro inspired first-person shooter.

KRAVN is a PSX-style boomer shooter built around a living stick weapon: throw it, ricochet it off walls and enemies, chain kills fast. Fight your way down through humanity's last worlds, built deep to survive an AI war.

You are super soldier whose mission is to find captured oil which is captured from evil army from East

Gangsta Style is a one-of-a-kind versus-fighting first-person shooter with voice controls! Outplay your opponent, slap them in the face, and become the baddest gangsta in the neighborhood!

Project: Haste is a first-person multiplayer parkour arena shooter on skates, where skill, style, and speed reign supreme. After hours, skaters hijack civil spaces using 2000s-inspired tech to wall run, double jump, and power slide through newly created chaos playgrounds.

A submerged post-apocalyptic retro-style FPS set in a world swallowed by the ocean after a human/AI war. Blast through flooded facilities, battle corrupted machines, explore radioactive ruins, and uncover the last buried secrets of humanity’s collapse.

AlienCity is a fast-paced, wave-based FPS where you fight through a dark, stylized city overrun by alien creatures. Survive, score high, and push your limits against relentless enemy swarms.

Bulletarium is a fast-paced, retro-style FPS packed with pixelated carnage, relentless demon-slaying, and old-school attitude. Take on the role of a nameless rookie resistance fighter and do battle with hordes of alien invaders and demons. Uncover a terrible secret that plagues the planet!

It's the 22nd century: Galactic travel is commonplace, peace is at hand, and the future looks bright - until Goldfire's plan to unleash an army of military mutants shocks the galaxy. Dr. Goldfire, a brilliant bio-scientist whose morbid research led to incredible genetic improvements in humanoids and aliens, has gone power crazy.

VINCIT is a blend of fast-paced shooter action and a spellcast system. Craft bullet combos, obliterate enemies as fast as you can, and have a blast.

Behind a veil of secrecy the evil Empire is creating a doomsday army - one that, if finished, will become the final cog in the Empire's arsenal of terror and domination. Your Mission? Join the Rebel Alliance's covert operations division, infiltrate the Empire.

Ali, who lives an ordinary life, loses all the happiness and peace he once had in a single day. And with a glimmer of hope, he begins searching for the peace he can no longer find in this world — for himself and his little sister.