Top similar games like Alien Outpost:

A bombastic bug busting adventure! Play as one of four playable characters in their quest to to free their fellow elves from the clutches of an evil army of spiders. If they crawl, blast em all! Let nothing stand in your way.

ZEROCRON is a straightforward, classical arcade Twin-Stick Shoot-Em-Up with a strong Commodore-Amiga-era feel. Blast asteroids and enemies to burning pixeldust!

Gem Raider 2 is an old-school move-and-shoot game. Your objective in each room is to destroy all of the Power Gems and return to the teleport pad to exit. Other Gems can also be destroyed to increase your score. There are 20 rooms and each of the 9 types of enemy Gems has unique weapons or skills.

Space Redemption is a 2D shooter in which the protagonist is assigned the role of the savior of mankind!

Split Drive is a roguelite arena shooter where you have to find your way home through a hostile galaxy, numerous locations and a variety of bosses, all generated procedurally.

Core Breach is a fast-paced, top-down arcade shooter where you out manuever and destroy anti-virus enemies as a trojan worm. Upgrade your trojan worm with attacks and skills to breach the core.

Void Prison is a fast paced, endless arcade twin stick shooter that puts you inside of an ever shrinking ring. Survive by fighting emerging enemies around you and don't get consumed by the void. Complete achievements to unlock new skins and powerups and get on top of the leaderboards!

Xeno Crisis is an arena shooter in which up to two players take control of battle-hardened marines embarking on a deadly mission to confront an alien menace! Run and gun your way through thousands of adversaries, searching for survivors, and ultimately facing the origin of the outpost's demise.

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.

Survive the waves! Buy weapons and ammo! Unlock new stages! Purchase companions! Solve daily quests and get rewards! Casual Pixel Warrior is a wave shooter where your endurance to last an infinite fight depends on your skill, unlocked weapons and purchased ammo.

Top down 2D sci-fi space themed roguelike bullet hell shooter with different player classes and abilities to play with.

Roguelike top-down shooter with a 70's Sci-Fi theme. Fast paced. Play as a parasitic worm, control the brains of your enemies.

Compete with your friends to claim as much territory as you can in this multiplayer sidescrolling arena game! Paint the town Red, Blue, Green or any combination of the three!

Classic multi-directional (360°) shoot 'em up. Navigate your UFO through hazardous environments with dangerous enemies and beat huge bosses!

Battle massive hordes of alien monsters to secure humanity's presence on planet Gore. Upgrade your base, hire troops, and install turrets to fight back the ever growing waves of aliens.

BattleCourt: a Casual Horde Survival Looter and Shooter. Millions of combinations of guns, survive as long as you can.

A clone army is taking over the world. Kill them all in an epic single-player campaign to save humanity, and yourself!

TwIn-stick RogueLike Shoot'em up Action!

They're Coming! Get ready to defend your lovely Flower from invading insect! Prepare your Bug Spray, Call your Holo-Pet, Fortify base and don't forget your mission: Find the Watering-Can!

Dodge the enemies shot and kill them with different weapons. Move, Dodge and Kill is a rogue-lite dungeon crawler in a neon environment.

KosmoSquad is a twin-stick arena shooter where you survive as long as you can against an ever-increasing hoard of enemies. Fight alone or with up to three friends and collect star multipliers to maximize your high score. Use your score points to purchase upgrades for your ship and try again!

Accumulate combos to wipe out your enemy！that is 《STRIKE BUSTER: Prototype》, a new kind of shoting game with unique gameplay which has both retro and modern style. Accumulate combos, switch weapons, collect relics, destroy tides of enemies and powerful bosses, survive and get the highest score!

Your Otter Space crew has been captured by evil robots. Save your team and fight together through endless rooms of evil robots.

STG Become on Immortal - Opening Chapter is a bullet screen shooting game, which integrates China immortal elements into bullet screen shooting. Rich bullet screen types and rich bullet screen effects may give you a different experience.

The dinosaurs have brought the fight to the wrong cat’s territory. Mess with MewMew, get the PewPew: It’s time to send the dinos right back to extinction.

Vlambeer Arcade's ULTRABUGS is a fast-paced high-score game in which you fight endless space bugs that split up into MORE space bugs as you fight and defeat them.

Brutal (one hit kill) twin stick shooter with hilariously fun and clever enemies. Also has roguelite and Sci-Fi stuff.

Laboratory X-29 is a sci-fi roguelite-like top-down shooter, where the protagonist takes his chances to escape from the Lab after an accident. Shoot your way out to freedom, clear rooms full of other dangerous experiments, find out the secrets hidden in this place and eat chicken to survive.

Aliens have taken over humanity and now have the goal to destroy Lexi Lane, the last hope of human resistance. Step into Lexi's "pedal to the metal" shoes. Help the last heroine drive, drift, and blast her way through the alien onslaught and meet her destiny in a last act of defiance and glory.

Who will be the last one standing? Choose your hero from a wide range of universes and play with friends in this party shooter packed with colorful graphics and rogue-like features. It's just plain fun, online or locally, for one to four players.

Battle against your friends and loved ones in Kill Ball! Score a goal and get an explosive bullet to kill your opponent. The first player to reach three kills wins the game and all the glory.

Prepare for an interstellar showdown like no other in a gripping roguelike top-down twin-stick shooter set in the vast depths of space. Pilot your advanced starship, engaging in relentless battles against hordes of alien adversaries. Destroy, Collect, Upgrade, Die, Unlock, Repeat.

Crush, smash, and eat thousands of enemies showing humanity what the meaning of destruction is! Kaiju Catastrophe is an arcade game with roguelite mechanics. Mutate devastating weapons, unlock permanent evolutions, and wreak havoc with a variety of monsters to tear humanity apart!

This game that brings back all the charm of shmup games from the 80s/90s. X-Force Genesis is a frantic and chaotic space shooter created from big and beautiful graphics with insane boss battles. Embark on epic battles and stop enemies from establishing a military base in orbit around X-planet

Flight of the Athena is a twin-stick shooter + roguelite; fight through the procedurally generated campaign to earn new craft, weapons and upgrades as you take on the enemy fleet to destroy their central command.

Crocogame is a fast-paced roguelite game with intense moment-to-moment combat and flexible character customization. Use your resources efficiently to take on increasingly difficult threats. Great challenges also bring great rewards!