Top similar games like USG:

Defender's Squad is a sci-fi vertical scrolling shooter 2D that combines 7 different levels. Play Solo and pick one of the 3 ships to kill enemies and save the earth from aliens.

100% Clean Inc. is a top-down Roguelite shooting game. Follow the new intern as he explores the cleaning company building, where things seem to be going wrong.

SHOOT 'EM UP!Starlight: Eye of The Storm is a 2D Vertical SHMUP set in a 3D background. Unleash your special powers, upgrade your weapons! Take on 10 Arcade stages or 15 Campaign missions! Drift (auto-pivot mode) behind your enemies and take them on with style!

Fast top-down space shooter with varied missions, relentless enemies, powerful ship upgrades, and most importantly, fire.

This is a retro space shooting game, where you only fight against the strongest enemy. There are 15 unique bosses in the game, and players need to use different weapons and strategies to defeat them. Dedicated to you who are both challengers and retro game lovers.

You've been dropped into enemy space. Weave your Starfighter between alien spaceships, lasers, asteroids and bombs destroying as many as you can and collecting valuable coins and powerups as you go.

Start off as a weak ship with a simple attack and fight through waves of enemies, earning currency in order to purchase upgrades for your ship. The never ending waves of enemies grow in number, power, and variety as you progress. Purchase upgrades to keep pace with them.

Retro style 2D vertical scrolling simple shooter.

Escape the Maze of Malice in this frantic 2D top-down shooter!

Grab the fate of all life in your hands. Blast your way through the cosmos, destroying monstrous cosmic beasts and the space cultists summoning them, on your path to stopping your mother from unleashing the chaos realm upon the universe, in this sci-fi cosmic horror bullet-hell, STARR RINGER.

Alien Slayers is a roguelite time survival game where you hunt down hostile alien creatures on various planets. Grab your weapon and survive to the end to become the strongest alien.

Destroy hordes of strange machines that have invaded the forest. Yawnoc is a chaotic top-down shooter roguelite focused on immersion into the world of Conway's Game of Life and other cellular automata.

Repel extraterrestrial entities!

Bullet hell about destroying computers. Be the ultimate bug you ever wanted to be. Swarm those capacitors and break the boards! [THIS GAME IS STILL IN DEVELOPMENT]

BroodStar is a classic arcade shmup with roguelike elements. Acquire crazy item combos, encounter strange events and fight challenging bosses on a quest to destroy the living planet, the BroodStar.

XenoFeud is an insane top-down twin-stick arcade alien shooter, where you must survive hordes of alien intruders while defending a mysterious object in space.

The humanity succumbed against the power of a aliens intergalactic empire, but managed to organize and establish a resistance army. Join the rebellious seekers of peace and help them defeat the evil that haunts the Earth.

Marimoth is a short shoot 'em up that puts in control of a moth whose shots bounce off the walls. Calculate your aim, evade enemy attacks by learning their patterns and collect coins to power up.

ShapeNeon Chaos is an old school style space-shooter. You are a ship facing off waves of deadly enemies. This game was made to give you a shot of adrenaline in a couple of minutes. Lots of bullets and neon in an arcade psychedelic shooter!

Blast through waves of alien enemies in Project AionIX! Master your piloting skills, dodge, and survive in this fast-paced space shooter!

Cycle 28 is a classic arcade space combat game where you have six minutes to beat your high-score. Simple controls, powerful upgrades, and intense dogfights. Perfect for when you just need to switch off and shoot something. See you on the scoreboard!

Stellar Space is a new take on a classic arcade game with a modern, rogue-like, form for new players to enjoy!

Combining retro puzzles and a arcade space shooter. You and your crew found strange materials in the galaxy core to upgrade your ship to the most powerful. While collecting core materials you came across something unbelievable ... The Core Message. The Core Message changes everything.

Gratuitous Shooty Game is a hobby space shooter made by the developer of Gratuitous Space Battles, reusing the art from that game :D.

Shoot for the stars and help Latte train in her quest to become the top cheerleader in the universe! Use your Pom-Pom Blasts to pummel the competition while dancing through a downpour of endlessly raining enemy bullets! Ready? Aim. Fire!

Zombie exterminator is a top-down shooter roguelite where you play a soldier. Combine weapon parts and create unique weapons. Use gadgets and relics to exterminate zombies. Fight against zombies and horrendous creatures.

Collect synergizing items to create an overpowered character to fight hordes of cyclops monsters. Cyclo Chambers is a fast-paced, top-down arena shooter with light rogue-like elements. 150 items to choose from to create frantic combinations. Different runs every time.

A Mystic Gate created by the gods suddenly appears in the human world. Adventurers challenge themselves with the tests that await them beyond the gate. In order to earn your wish you must defeat hordes & bosses in this roguelike dungeon exploration bullet hell!!

Cleanup Crew is a fast-paced survival action roguelite. Complete emergent objectives, customize your build and put your skills to the test to survive nerve-wracking hordes of creatures across bizarre worlds. Will you be able to survive until extraction?

Escape corruption and deliver truth to the people in the only way you know how. as a space fighter pilot! You steal a ship and flee, it falls to you to duke it out in space and deliver truth to the people. Restore peace. Restore justice. Save humanity and Escape The Kreegan!

The fantasy bullet battle to end monstergirl genocide! Turn hateful humans into lovable demons in this 90s arcade style shooter.

The Journey of Piggy is a roguelike adventure game with fast-paced, shoot 'em up combat set in a beautifully hand-drawn world. Choose from a variety of weapons, cards and power-ups to create unique builds and survive until the end.

The alien hordes have attacked us for no reason. We must throw all our forces to repel our planet from the alien invaders!

Survive in the deep void of the galaxy against thousands of invaders! Nebula is a challenging bullet hell, twin stick shooter where you have to face endless waves of space enemies. Additional map resources and space drones can provide you a support but be wary, they can as well become a deadly trap.

A topdown bullet hell game where you control a spaceship and fight waves of asteroids and enemy spaceships.

Astragene is a roguelite shooter where you will have to survive each level facing hordes of aliens. Improve your abilities, choose new upgrades, and create reactions by generating combinations of powerful elements. Each game will be different, will you be able to adapt?