Top similar games like BoboInvasion:

Retro arcade classic, Defeat a million invaders from another dimension in this side scrolling shoot'em up.

Red Horizon is an addictive space shmup game. Heavily influenced by the classics of the past, Red Horizon takes a modern spin on the genre combining it with some subtle Rogue-like elements to provide players with a unique experience every time they play.

Kill it. Take its gun. Rinse and repeat. WARNING: You will die. A lot. Probably. This 2D Retro shooter is about as hard as it can get, but repetition and good luck will cut though everything like warm cheese. This game grows with the community, and more bosses will challenge you in the future.

Spaced Liberation is a very small indie game about the liberation of a planet.

In Waifu Space Conquest you can play a nostalgic arcade game. Conquer all the space to pass the level. Confine the aliens in your claimed space to kill them.

The Japanese just love their famous German-inspired Baumkuchen cakes, and hungry invaders from across the universe have discovered these delicious treats too! Are you up to the challenge of protecting the precious desserts from waves of alien attacks? Save the cakes!!

Splash Carnival is roguelike shooting game featuring paintball weapons. Arm yourself with diverse low-durability weapons, splash the enemies and move forward! Welcome to the Splash Carnival~!

Crowds of aliens attack from all sides, collect the necessary skills and survive.

You're in control of a spaceship and your mission is to destroy as many asteroids as you can. Compete for the highest place on the Leaderboard.

Craft and upgrade the ultimate ship and survive an onslaught of enemies in this top down, rogue-lite shooter.

Go free your besieged home planet... all by yourself! Emancipator GO! is a survival game with roguelite elements.

The game takes place in a nearby galaxy where a fighter with intergalactic evil in the form of a black cat has settled down

Blast and weave your way through enemy fire while managing a wide variety of ship power-ups in this retro style horizontal shoot-'em-up!

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

Returning to the classic style of spaceship games in pixel art. Survive in space as many enemy ships and anything else that can destroy your ship, get all the advantages and improvements available to get your best score.

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.

It is an awesome space war game. It is a very simple game. Move the spaceship and shoot the asteroids. Try to make the highest score. It is an easy and time killing game. You can play to rest and relax between the big games you play.

A retro space shoot 'em up with pixel art graphics, unique enemies, tough angry bosses, and a killer soundtrack. You are among the first pilots to arrive in the system to mount the counteroffensive against the aggressors. Get out there and show these aliens the price for messing with The Alliance!

ASTRO ACE is a retro-style addictive arcade space shooter. From the distant universe, an evil alien fleet is invading the solar system. You will have to ride a powerful spaceship and fight against endless waves of enemies.

"Galactic Gladiators" is a 2D top-down shooter where you control a spaceship battling against enemy forces. Choose cards for unique abilities, collect crystals to upgrade, and defeat bosses to progress. Test your combat skills in this thrilling game.

Crossfire II is an Retro / Arcade / Top-Down Shooter, originally released in 2002 for the AMIGA. The main part of the game is a classic, fast paced, single player story campaign. Fly different space ships and fight, to save the universe as you know it. Also you get a survival and a local PvP mode.

"Astro Wings: Space War" is a retro style, exciting and authentic bullet hell, space shooting game.This game brings you the thrill, urgency and fantastic experience of an authentic arcade shooting game.

PewPew! - move, shoot and upgrade!

Starship Architect is a high-octane roguelike where every decision counts. Battle relentless enemies, choose from a dynamic arsenal of weapons and upgrades, and strategically assemble your ship. Unlock powerful new parts after each run and craft the perfect starship.

Survivors of the Mare Vitalis is a Rogue-Lite action game, which you can discover unique planets and it's biomes while thousands of animals and uncategorized life forms coming after to kill you!! Earn Credits while destroy them, upgrade yourself and destroy the Ecosystem of each planet!!

Pew Pew Pew, KaBOOM! is a challenging old school arcade game filled with action! Unlock new costumes and enjoy the awesome Chiptune OST as you reach new highscores!

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Immerse yourself in a 2D pixel style game where you control a spaceship against enemy motherships. Your mission: destroy their towers with accurate shots. Face constant attacks and dodge asteroids, satellites and black holes. Beat levels to face more challenging enemies.

This is a 2D Pixel Top-Down Space Shooter Game. The game implemented Rogue-Lite elements, like the survivor series.

Classic 80s inspired shooter

Blast your way through oncoming hordes of slimes in this run and gun, slime blasting shoot 'em up! Arm yourself with an arsenal of futuristic weapons and defend your home as its invaded by a disgusting infestation of slime scum. Run, Blast, Survive! and whatever you do...DON'T GET SLIMED

It's a pixel art space shooter that has some other ways to help defeat enemies besides just shooting/bombing them directly. Different abilities to help you avoid damage or defeat enemies. You also can upgrade your aircraft to defeat powerful enemy.

Solitarius is a 2D top-down wave shooter set in a sci-fi space environment. It is a free minigame that contains six different levels, eight different enemies and nine different weapons. Instead of surviving as long as possible you have to make it through each level.

Complete tasks and survive the oncoming enemy waves for as long as possible! Are you good enough? Are you a frequent flyer?

Embark on an epic fruit-filled adventure as Jack the Apple, battling brainwashed banana soldiers in this top-down 2D pixel shooter to stop Dr. Banana's evil plans!

Devastation - Annihilate the Alien Race, is a 2D, dual stick shoot em' up, bullet hell, arcade game. Tear up hordes of aliens with skill based game play, bombs & upgrades to obliterate everything!. Gun down 11 massive bosses, bank insane score on the leaderboards & overcome clouds of enemy fire.