Top similar games like Space Circle:

Mechs V Kaijus is an addictive hardcore tower defense gameplay. In Mechs V Kaijus you take on the role of Commander of a powerful Mechs squadron. Improve your Mech, strategically place towers and factories on the battlefield. Deploy support units on the battlefield, and save our civilization.

Defense Grid: The Awakening is a unique spin on tower defense gameplay that will appeal to players of all skill levels. A horde of enemies is invading, and it's up to the player to stop them by strategically building fortification towers around their base.

Bullet heaven meets base building in a survivorslike set inside a broken computer. Fight corrupted files, stack upgrades, and place automated helpers that shoot, shield, repair, collect, and trap while you stay alive.

Creeper World 3 is what happens when cellular automata takes over a strategy simulation. Instead of discrete units that attack your base, a fluid-like substance spreads over the terraformable terrain. Your base, your weapons, your strategy... you must adapt them all.

Build towers, unleash ultimates and command six heroes in sci-fi tower defense. Play all 100 Scenario stages free. Try one-minute highlights of Basic and GRID COMMAND before purchase, then take your aerial fleet into GRID COMMAND's survival battles.

A hybrid card game and tower defence where the hands you play become the towers you build. Defeat the enemies approaching the bear's den and find modifiers that support the elements of your defensive strategy.

On the night I saved the world, I died. A tower defense game in which the main character travels through the world after his death. Collect characters and items, organize your party, and find out the mysteries hidden in the world.

Expand your moving village while monsters try to tear it down in this strategic horde survival. Combine blessings, level-ups, orbs and buildings to create the ultimate survival machine!

You are humanity's last hope in this tower auto battler inspired by the popular Warcraft 3 mod. Every 30 seconds eight new potential upgrade cards appear. Your build must turn the tower into a fortress while ever-stronger enemies close in. In Fortress mode, every run grants permanent upgrades.

A roguelite base-defense game where your traps decide where enemies walk — and where they fall. Block a chokepoint so the whole wave comes down one road, line it with traps, and draft a new one from three cards after every wave. They won't make it easy: they dig through walls and tear traps apart.

Gunpowder vs Samurai: A Tower Defense + Auto Battler. Wield the Ming dynasty's cluster bombs, rockets, drones, and cannons against pirate fleets from the sea. Build formations, set up artillery, can you replicate Qi Jiguang's legendary 0:2000 kill-to-loss ratio?

Machines vs. Monsters is a roguelite tower defense. Land on a hostile planet, build mazes of industrial firepower, and hold your Command Center against escalating native waves. Lose, learn, upgrade the fleet, redeploy. Batavia's survey says the site is viable. The site disagrees.

Build, Upgrade, and then Move your Towers in this unique twist on the Tower Defence genre. With Rogue-Lite mechanics every run offers new strategies, and every death unlocks new upgrades. Grow. Evolve. Destroy the Robots!

Defend a central core in a neon geometric survival tower defense. Move and aim your operator, construct fortifications, research permanent upgrades, collect enemy ability modules, face evolving bosses, unlock endless mode, or cooperate online with up to four players.

Scrap Bastion is a strategy tower defense game where you manage your city, equipping it to survive the waves of mutant creatures, testing your planning and decision making capacities at every turn. Watch out, as time is crucial to win!

This game is a brutally hardcore sci-fi tower defense, featuring BBS-era and ASCII graphics. You are a commander who must use everything at your disposal to stop the AI horde from opening the rift, and unleashing a cosmic horror upon the earth.

A relaxing incremental tower defense game. The demon tide rises, and the last mage tower trembles on the edge of ruin! Start as a humble apprentice, study the arcane, forge staves, and break through rank after rank. Hold the line and rise to become the supreme Archmage.

One laser. Build a machine of mirrors, splitters and lenses that burns every step of the path. Light gets tired: every enemy it passes through drains it, so where you split and where you strike is the whole game. A tower defense where you engineer the damage. When it slips mid-wave, grab a mirror.

The ultimate mash-up of Real-time Strategy and Tower Defense!

DEFEND 99 is a rogue-lite tower defense game with deckbuilding and autochess elements. Place your turrets, roll for upgrades, equip Mods and Buddies, balance your economy and prepare your board strategy for enemy empowering weather effects. Can you hold off all ninety nine waves?

In the war against the Skynet, humanity was pushed to the brink. Until flesh and weapons were fused as the ultimate countermeasure. Link pulse-emitting cores to weapons, activate fusion modules, and unleash endless bullet storms against overwhelming enemy hordes.

Transistor Defense is a strategic tower defense game where players must fend off the onslaught of a rogue sentient AI determined to overtake the network.

Sweep away the swarming blueberry horde! Taerim's Blueberry Defense is a side-scrolling roguelite defense game bursting with particle effects. Hammer your skills to clear the field, evolve maxed-out skills for a different build every run, and spend Essence to unlock new skills.

Build your mobile outpost and combine over 20 weapons with 100+ items to create unique builds. Grow stronger against endless enemy hordes, conquer new planets, and experience the thrill of evolving from desperate survival to overwhelming firepower.

Design and drop your droids to fight, build, and conquer. Mine resources and outlast the relentless swarm to claim the planet.

A roguelike tower defense. How far will you stretch your network? And can you adapt to this alien planet enough to eventually consume it! Battle against everything the planet can utilize against you, while upgrading and fine-tuning your strategy to prevail!

Design your defenses, build your module board, and manage your wires. Combine signals and create synergies to empower your weapons and survive in this base-defense roguelike auto-battler.

Fast paced Top-down shooter! Smartly use IRCM to evade the constant barrage of bullets and missiles and destroy everything that stands in your way.

A tower defense roguelike about robots and ooze. Play solo or local multiplayer, protect the Glorp, and defeat the creeps. 

Mine. Maze. Merge. Survive. Dig for powerful gems, merge them into game-breaking towers, stack buffs, and pick roguelike perks to build wild synergies. Do not let enemies drag your miner to the lava!

Endless Defense is a roguelite sci-fi tower defense game where every run becomes a new build. Place turrets, choose traits, draw upgrade cards, use special tiles, and evolve your defense to survive endless waves of enemies, elites, and bosses.

Captain, open fire! Blast swarms of monster fish! Combine special ammo, secondary weapons and crew support. Boost your firepower with salvage upgrades and return with a hold full of loot. Unlock 50+ armaments, recruit and train 100+ crew, earn deep-sea blessings and brave deadlier waters!

Armoured Onslaught is a fast paced Top-Down Shooter and Tower Defence hybrid. You will need to make use of both strategy and skill as you fight your way through near endless hordes of deadly foes.

Neon Grid Defenders is a sci-fi roguelite tower defense game featuring a free and unique upgrade system, decision based path generation and a strong but static difficulty curve. Build your path, place your towers, hook them up with upgrades and melt your enemies!

Swarm Survivors: Endless Siege is a light roguelike bullet-hell idle shooter. You play as the last survivor of the Swarm, fighting to stay alive under the endless siege of alien fleets. Build overwhelming power and face wave after wave of relentless challenges.

Build orbital rail systems, combine trains, turrets, and weapons, and defend hostile planets against overwhelming swarms. Every run offers chaotic build variety, explosive firepower, and endless strategic possibilities.