Top similar games like I.F.O:

Invaders from the Lost Sectors is classic arcade action. Aliens descend with increasing speed towards your base. Shoot them all before they land. Player controlled settings like guided missiles, rate of fire, enemy speed and more help you customize exactly the game experience that you want.

WE HAVE ALIENS, YOU DON'T—Blast Martian invaders and flying saucers across 30 stages with robotic voice effects. Use your destructible shield, rescue army men for bonus points, and chase the high score.

Steel Alcimus is a top-down helicopter shooter. Complete various tasks with your ally aircraft; such as saving the carrier, taking down the buildings, carrying objects, etc.

Defend the Little Spaceman Dudes from aliens! Blast waves of Alien Abductors and UFOs across 50 challenging levels in this fast-paced ’80s-style arcade space shooter.

Super Duper Arcade is a compilation of reimagined timeless arcade classics. A passionate love letter to 1980s and 1990s arcades. Chase high scores in single-player mode or go head to head with a friend to see who's worthy to call themself the Master of Arcades.

Cyberpunk 3776 harkens back to the glory days of arcade shoot-em-ups. It all begins on a postapocalyptic earth and proceeds into space. Your journey will be a metaphor about life and death, a road that every person has to walk down alone. The only choices you get while on your path to the inevitable end: keep your head up high or forfeit.

A quick and action paced retro styled arcade shooter, or shoot 'em up (shmup) if you like. Perfect to play in short chunks, like when you are waiting for big games to download.

The year is 2051. Location: SATAZIUS, a long-abandoned planet. The cruiser Agano was on patrol when it was attacked and stricken by a confederacy of space pirates that had established a base on SATAZIUS. The pirates attacked the Agano intending to steal the assault ship ‘Trafalgar’ that was stowed aboard the Agano, but the Trafalgar made...

In the vast depths of space, lies a man with a dark past. Setting himself apart from that old life, and seeking justice against wrongdoing instead of being the cause of it, Captain Righteous uses the Freedom Fighter, his trusty space fighter to search for and combat the evil Captain Buster!

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.

The arcade classic returns with the trilogy finale. Blast through 50 new levels to wipe out The Evil Snarfers for good. Use classic power-ups and the new Multi-Shot Laser Paddle to save Earth—and unlock the final ending cutscenes.

Spacejack a UFO and turn alien tech against its owners across 49 action-packed stages. Use black holes, nukes, slow-mo, and more to survive escalating waves and save the planet.

Jetboy is a retro supercharged jetpacking pixel shooter with a pumping metal soundtrack.

Bit Blaster XL is a fast-paced, retro arcade shoot 'em up (shmup) inspired by the classic quarter-munchers of the ‘80s. Easy to pick up, hard to put down, boost, dodge, shoot, and chase high scores in this addictive, old-school action game!

A shoot'em up inspired by the 16-bit classics of the genre.

Zenvader is a super retro shooter mixed with roguelite elements. Dodge the barrage of bullets, improve your unit, and try to defeat the Alien King!

Rude aliens have arrived to sample Earth's legendary all-you-can-eat buffet, and they're sending a smorgasboarding party down to YOUR dining room. Can you assemble and deliver their plates of food before the aliens wreck the restaurant?

Offendron Warrior is a retro arcade that combines shooting and defense. Your objective is saving Offendron civilians in the planets from the group of enemies, who are trying to spread a virus that turns Offendrons into mindless killing machines and eventually destroy the whole planet.

Blast those pesky birds in Ah 'ate those flockin birds! Recover lost property and then build with precision in Retroa Retroa Builda! Climb your way to victory? in Slime!? Climb!? A RAD 80s-style game bundle - great for players new to gaming & retro fans! Retro games with a slight modern twist!

Survive the swarm and clear the arena of alien infestation in this fast-paced bullet hell roguelite shooter. Unlock new heroes, guns, and skills in a never ending quest with one thing in mind. Keep Those Bugs Away From The Bomb!

Test your reflexes and multitasking skills in this unique arcade block-puzzler. Control two grids at once, clear lines on both sides, keep up with the rising speed, and chase the high score. Two hands, two grids… back in block again!

The year is 1989. 12 years have passed since the Gogoh Army’s invasion of Earth. Exposure to alien technology during the war enabled Earth’s own technologies to take massive leaps forward. International conflict that was previously rife in the history of mankind fell to an all-time low, and the Earth Federation was established as a...

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

Pets Survivors is a survival roguelike where you battle hordes of monsters and fight to stay alive until time runs out. Choose your pet, pick your favorite weapon, upgrade your abilities, and see how long you can survive!

Endless arcade action with just ONE button - Switch directions whenever you shoot!

Mashup of classic arcade games.

AREA WARS™ is a fast-paced 2D omnidirectional shooter where you battle enemies from every direction in a constantly changing enclosed area. Defeated enemies trigger chain explosions that engulf nearby foes and boost your score multiplier. Built for short, repeatable runs with score-focused gameplay.

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.

Super Captain 3D is a shoot-em-up game where you become a Super Hero ready to fight the Pixel Invaders. It features an art style that combines 3D pre-renders with 2D pixel art. Use your Superpowers to protect the Universe!

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.

The original 8-bit twin-stick space shooter about brotherly love, available to play for free.

Killon is a retro shooter that features exhilarating combat, manic enemies and a charged cannon waiting to be unleashed. Fly a starship across the universe and restore the future today.

ZANAC-like Ultra High-Speed Scrolling 2D Shooter Humanity suffered a crushing defeat in the war against the sentient AI, RA6 the Great Sovereign, losing 70% of the global population. Now, you board the anti-AI fighter MSX-3 Arondight, and launch into the final battle against the Sovereign.

Curious why gamers in the 80s were so addicted to NES games? Star Keeper will take you on a journey to experience the joy of staying up all night to beat this NES game!