Top similar games like Outlaws vs Aliens:

Aliens have invaded, and Kid Bubblegum is too cool to let that slide. Armed with his trusty Gumslinger, he’ll kick some alien ass and shoot bubblegum…and he has plenty of gum!

Brave Soldier: Invasion Of Cyborgs is a pixel art platform game with a lot of action. Help the soldier save the world from the Cyborg Invasion! Good Luck!

The legendary Contra series returns! This reimagining of the classic run-'n'-gun action game from the ‘80s features new stages, new enemies, new play mechanics, and co-op combat for up to 4 players!

G WARRIOR is a retro hardcore action shooting game. Pick up the gun and destroy all robots and aliens. Fight in colorful scenes such as snowy mountains, caves, seas of fire, alien lairs, etc.! !

Moonless is a challenging side-scrolling platformer in the style of classic arcade games of the 1980s, where you control a helpless astronaut who has been left stranded on the moon, and now has to face an invading alien force to earn a chance to go home.

Intense 2D action-platformer set in a mining colony infected by an alien plague. In B.I.O.T.A. you can choose your hero, fight gruesome monsters, and customize your 8-bit retro experience with swappable 4-color palettes.

A Game Boy style 8-bit platformer, giving you an old-school experience in which you can switch characters at any time and use your digging skills to make your way through the terrain!

Stretch across lands of unforeseeable cold, and trouble in Urizen Shadows of the Cold Deluxe Frosty Edition which includes a massive 54 warrior, 69 stage "head bopping", sword slashing lineup with characters raging from beasts, ogres, ninjas, knights, aliens, sorcerers, mermaids and demons.

Mama Die and Retry is an old school action platformer that offers a challenging experience through 26 levels and 4 bosses. Fight with a working class hero and discover new horizons filled with a lot of aliens and threats. Use your broom against them. Each time you die, you will retry.

Retro 2D collection of 4 micro games

Save your school in the thrilling maze chase game, "School Hero." Eat bots, deploy special weapons, and challenge friends in multiplayer mode. Available on Steam Deck for gaming on the go!

On an ant hill far away, a malevolent mantis commands a UFO, abducting ants. With the queen by his side, their mission: wipe out antlions once and for all. You, the last hope, must outsmart the mantis, protect your kin, and ensure survival. The fate of antlions hangs in the balance.

Experience the nostalgia of the past, reimagined for the present, BOOM42 is a party game for up to 8 players. Join the Crew-42 on a unique adventure, testing friendship and discovering new exciting planets!

Cosmos: Stella Returns is a metroidvania that will bring you to the mysterious planet of Memoria. Shoot, jump, collect materials and new items in this action-platform with a vintage flavor!

Delve into the world of Super Roboy, a hand-drawn Metroidvania in a post-apocalyptic setting! Learn enemy skills, explore an interconnected world, battle mutants and robots, and uncover the emotional story of a young robot searching for his father.

Astral Flux is an action-platformer with roguelite elements where each run is different. Traverse hostile alien planets, discover dark secrets, and face powerful foes in combat.

The most wicked men that ever lived on earth. Authoritarians, dictators, and tyrants, from Hitler to Stalin, they are all back. Historical Invaders it's a fixed shooter game where you are the chosen one to annihilate the demons of our past and save mankind.

The earth has been invaded by aliens, and even though they are still in training, a group of soldiers are trying to save their city while trying to understand why it happened so quickly.

Antrio is a 2D action-platformer inspired by classic games from the 8 bit era. Shoot, drill, climb and fly to fight lots of enemies and overcome the challenges each level has to offer.

A love letter to classic NES games! Explore an ever-expanding, challenging maze filled with countless secrets.

A collection of very simple 1-3 input games.

Abduction Bit is a NES-like arcade based on elements of some timeless classics from 80's (Bubble Bobble, Ice Climber, Mario Bros).

Grav Blazer is an arcade space shooter with a focus on fast paced action. Skill based firing mechanics, rotational controlled power attacks, increasing level difficulty, and endless procedurally generated levels are some of the features players will experience.

A New Retro Classic Defender Arcade Game. Defend these Little Spaceman Dudes from Aliens! Blast your way through waves of Alien Abductors and UFOs while defending Spaceman Dudes from being abducted in this fast paced 80’s style modern remake.

A retro space shooter with a twist - now you can rotate your ship and aim diagonally at enemies, adding a whole new dimension to the shoot 'em up genre.

This is a shooting action game in the style of Metroidvania. It is not a very complex maze, and the emphasis is on shooting combat. There are several types of weapons that can be used, and maintaining firepower is an important key to the strategy.

A classic style SHMUP in the tradition of 80's and 90's vertical scrolling shooters. Maximize your run and get to the top of the High-score Leaderboard. Can you achieve the rank of Fleet Admiral? It's a challenge. Visit our website for a free playable browser demo of the game.

Collection of a few arcade classics, remade with a fresh and friendly looking art style and a beautiful soundtrack.

Xentron Attack is a multi-directional shooter. The evil alien forces called Xentron have invaded your galaxy and spreading dangerous meteors and missiles in the space. Fight with smart enemies who calculates your movements. Turn your ship precisely and use the borderless space wisely.

A modern tribute to arcade legends! This shoot'em up arcade game revives the classics after 45 years with fresh graphics and innovative gameplay. Become a part of Space Ranges Inc. Join now! Get the high score!

A New Retro Classic Space Shooter Arcade Game. Defend Earth from waves of martian invaders and flying saucers in this modern version of an arcade classic. Go back to the 1980’s and blast these aliens back into space!

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!

Neon Invaders will take you back to your gaming roots with its constant action and relentlessly brutal enemies. Absorb enemy shots of the same colour to trigger a flurry of fire to decimate the alien invaders. Dodge and Match your way to victory through 40 levels and 5 difficulty settings.

Gravitaws is a retro-style stage shooter inspired by Jaws (NES). Explore a dynamic overworld map. Collect research materials and upgrades, while evading an Alien invader. The story is delivered in classic style cutscenes. Fight bosses, survive, collect, fish, and bomb your way to victory.