Apps Like Circuroid for iPhone and iPad
Defend perimeter, shoot asteroids
Defend a circular perimeter by shooting incoming asteroids. Control spaceship direction for precise aiming. Unlock power-ups to alter gameplay mechanics and extend survival time.
Circuroid screenshots
Ranked alternatives
Showing 141–160 of 1,000 ranked alternatives.


Space Shooter: Alien Shooter
Thuy Nguyen
Play campaign levels and defeat aliens
Play through a campaign with over 100 levels featuring environments and encounters. Select and upgrade one of eight aircraft. Complete missions to progress through the storyline.

Tank Buddies
Kiseki Games Pty Ltd
Collect power-ups and upgrade tanks
Shoot and evade enemies while collecting power-ups. Upgrade tanks with unique charge attacks and support types. Summon to assist in battles. Complete challenging missions. Fight adorable enemies and epic bosses.

Last day on the planet earth
Aleksa Racovic
Destroy asteroids with one touch
Defend by tapping asteroids to destroy them. Avoid letting asteroids reach the . Earn points by eliminating threats in an endless gameplay loop.

Carpet Bombing - Bomber Attack
Synthetic Mind AB
Fly aircraft, fight enemies, upgrade weapons
Fly an aircraft and target enemies like soldiers, tanks, helicopters, and airplanes. Collect power-ups to enhance performance and upgrade the aircraft between levels. Navigate with touch controls or a joystick.

Rush Defense: idle TD
HONG KONG BASIC TECHNOLOGY LIMITED
Defend waves with enchanted axe
Play a tower defense game where you place towers and cast spells to defeat waves of enemies. Upgrade towers, unlock abilities, and find relics to enhance your character. Defend against fantasy creatures in an progression system.

Chiki's Chase
David Fu
Run, upgrade, and survive
Run through fast-paced, roguelike levels to help Chiki and friends return home. Unlock and combine 30 upgrades. Choose from 4 characters with distinct playstyles. Features charming pixel art, a dynamic soundtrack, and offline play with no ads.



Space Cadet Defender HD: Invaders
SixHourSoft LLC
Defend Earth and upgrade ships
Defend Earth from aliens in a fast-paced arcade shooter. Play through 150+ unique levels and boss battles. Upgrade your ship with new abilities. Use powerups to gain advantages. Save progress and compete on GameCenter leaderboards.

Ding Dong XL
Adamvision
Tap to dodge, bounce, and survive
Tap to move between top and bottom of the screen to avoid obstacles, collect points, and smash power-ups. Survive as long as possible in increasingly difficult levels. Adjust difficulty settings and track high scores.

Boson X
The Trustee for Shape Shop Trust
Run through particle waves and avoid collisions
Navigate a rotating track while collecting particles to increase speed. Avoid obstacles and manage energy levels. Unlock new power-ups and customize character abilities. Compete in leaderboards and replay previous runs.

Galaxy Invaders - Space Attack
PUMPKIN VN CO., LTD
Shoot enemies, collect power-ups, level up
Play as a spaceship to shoot incoming enemies in a scrolling shooter. Upgrade weapons and power-ups. Navigate through multiple levels with increasing difficulty. Collect coins to buy new ships and abilities.

Eve of Impact
H.J.F. Schennink
Aim and fire to destroy asteroids
Avoid tapping the screen to fire missiles at incoming asteroids. Carefully aim to explode missiles and push away or shatter targets. Missiles cause panic, slowing earth's evacuation. Game ends when unable to defend against asteroid barrage.



Radiant
David Peroutka
Shoot aliens, upgrade ship, survive waves
Play a space shooter against alien enemies across 100+ levels. Fight 10+ boss battles with upgradeable weapons and 12 special power-ups. Choose from 3 difficulty levels. Compete on global online highscore lists.

Endless Boss Fight
Kongregate, Inc.
Battle an evolving robot boss.
The app offers fast-paced arcade beat 'em up action against an evolving Boss Robot. Users can power up their character, complete missions, and customize their own boss to battle others.

Galaxy Infinity: Alien Shooter
Anh Nguyen
Shoot aliens, upgrade engines, climb rankings
Control spaceship with finger movements. Upgrade engines and collect items to enhance performance. Complete daily tasks for rewards. Compete in global rankings. Adjust rotation for strategic shooting.

How we rank alternatives
Apps are ranked by functional similarity, category fit, rating confidence, and popularity.