Top similar games like IFF:

Halo: Spartan Assault brings the excitement of Halo combat to Steam for the very first time. Battle your way through 30 action-packed missions against the Covenant as you explore the origin of the Spartan Ops program featured in Halo 4. *DirectX feature level 10 required. *

B.O.T.S. and the Robofriends is a sci-fi top-down shooter rouge-lite with multiple games modes. Play alone or with friends in 4-player co-op choosing from 4 unique robot characters with different attributes and attacks. Defend your home, rescue the Robofriends, and find MOTHER!

Repel extraterrestrial entities!

Boom Bits is a single-player twin stick shooter set in the distant future where humans have been forced to leave the planet. You must protect the cargo and get to the launch site.

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

Frantic 4-player laser ricocheting top-down shooter. Keep it casual and enjoy the chaos, or master the surprisingly deep mechanics to obliterate your enemies. Duke it out locally in free-for-all or 2v2.

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.

Space-based Fire is a science-fiction bullet-screen shooting game that tells the story of humans battling mysterious mechs. The game provides construction, tower defense, barrage shooting in one game experience.

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

Shoot, destroy, collect, craft and destroy even more! "Dark Gravity" is a fast-paced, low poly vertical shoot'em up game that features non-linear campaign mode with lots of enemies and bosses. Craft new weapons, upgrade your fighter and build an ultimate aerial war machine!

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.

Get into the cockpit of an ace pilot fighting in the galactic war in this sci-fi arcade top-down shooter. Participate in numerous campaign missions to explore the story of Magnificent-1 and enjoy the arcade mode to strive for the highest score.

Zip and zoom as you zap enemies and steal their stuff. Build progressively bigger, faster, tankier, more agile, more dangerous, more complicated, more projectile-y-ier ships in your goal to destroy and collect everything.

Dead End Job sends you into a madcap, Ren & Stimpy-esque world to bust up ghosts. It’s a procedurally generated, couch co-op, twin-stick shooter that straps a vacuum pack to your back and puts a plasma blaster in your hand. For you, it’s just another day in the office.

Battle aliens above the city of New York.

Space Waver is an action-adventure-shooter space game, with a strong bind to comics. Become a space mercenary and experience his life through multiple contracts.

A sci-fi twin stick shooter stripped down to the bare essentials with focus on smooth controls and satisfying action.

STAR SHREDDERS is a prologue to an extensive, story-rich SHMUP with strategic elements. Play as Clash, leading the Valkyrie force in the onset of an epic interstellar war. This teaser sets the stage for a larger adventure.

Teleport, shift through bullets, and master lightning-fast takedowns in an all new kind of action game from tinyBuild and Team Shifty!

Drift Vector is a love-letter to Asteroids, synthwave & making pretty patterns with neon glowing trails while going pew pew pew...

Play Droid Assault and experience running blaster battles with hordes of rampaging killer robots! Discover a unique tactical arcade shooter, with the fun addictive gameplay of 8-bit classics. You'll need your wits and the help of your acquired droid squad to stay alive in this fast-paced retro actionfest.

Viscera is an arcade-inspired, gleefully excessive top-down shooter. Fight through the muck and gore against the mutant menace. Master over 50 weapons and more than 80 abilities. Prove you’re the best at withstanding the horde until the end takes you. Viscera awaits. Soak in it.

Echo Punk is a roguelite top-down looter shooter with fast-paced combat, tactical upgrades, and endless replayability. Blast through waves of enemies, collect resources, and upgrade your build -- or die trying.

Will you have what it takes to avenge your father, defeat the evil DreadSkull and save the galaxy? Collect gems and customize your ship to get through six replayable sectors, annihilate your foes and fight epic bosses in this classic styled pixel art shoot'em'up with RPG progression.

This lightning fast arena shooter brings you right back to the highscore hunts of the arcade era. Use your arsenal of deadly weapons wisely against the increasingly ferocious monster hordes to survive as long as you can.

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.

Cosmo Chaser is space fighter action game which presents restless shooting battle. It demonstrates new style of vertical scroll shooter by presenting classic arcade action in 3D space.

Hyperbolic Ignition is a 2D multidirectional bullet hell-like shooter about a wandering pilot trying to return home. By utilizing wormholes, enter and evade combat against hostile spaceships, machinery, sentient crystals, and remnants of warfare.

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!

It's time for a change in perspective! Explore an adventure full of tricky action and puzzles in this third-person and top-down shooter hybrid!

A top-down action game like no other. Use asteroids to block enemy bullets and smash enemy ships in this physics-based test of skill. Conquer 25 levels, vanquish 5 bosses, and maneuver through 5 tricky bonus waves.

Welcome back to 1996! This shared screen space shooter is the perfect 4-player competitive game for some casual fun!

In a nutshell, Intersecta is an intense and intuitive tactical top-down shooter with a distinct arcade feel. It blends fast, twitch-based gameplay with the intelligent use of tactics. The game has a unique audio-visual style, utilising the power of Unreal Engine 5 for a stunning 2.5D experience.

MannaWars is a fast top-down arcade space shooter. Fight PVP battles with up to 32 players, or try your luck in CO-OP mode against waves of enemies! As long as one of your team survives, the whole team survives! All modes are available in single-player as well!