Top similar games like Totally Defenceless:

Space Year 2899. As the new Operations Chief of Japan's Space Facility Defense Office, protect orbital colonies from debris, space lifeforms and drone fleets. Build and upgrade defenses on 10 orbits with different routes, and reshape your tactics with 130+ research projects.

Build towers and learn abilities to defend against swarms of hundreds of on-screen hostile alien creatures. Choose between sets of randomized upgrades that both upgrade you and the alien swarm. From enormous explosions to far-reaching flamethrowers, no two games are the same.

A classic sci-fi tower defense game filled with waves of robots in full 3D. Get rewarded with automatic mini upgrades for well placed towers. As you make progress, unlock even more upgrades for your towers by building factories. Can you unlock the legendary golden tower?

A difficult maze-building tower defense about Yuki, a cat trapped in a teleporting jar. Protect it from robots and endure its unhelpful comments. Build your own paths, adapt as levels change, unlock powerful items, and uncover Yuki’s story. A love letter to Warcraft III custom maps.

Tau Cubis is a mazing tower defense game set in colorful sci-fi landscapes. Use your strategic skills to overcome numerous challenges and advance through the leaderboards.

A rogue-like sci-fi Tower Defense strategy game with infinite replayability!

Freely place a 15-chassis defense network, break visible enemy layers, and time Flux Gates, Protocol choices, commander abilities, and Overdrive across a 20-mission neon tower defense campaign.

A planetary tower defense where enemies attack across land, air, and space. Build layered defenses, manage resources, and survive an escalating alien invasion.

A living ant tower defense, upgrade abilities to increase competitiveness. Combine different ant species to form an aerial defense and kamikaze attacks. Deploy ants to collect honey. Breed ants to expand your territory and compete against red fire ants to save the natural environment of the island.

An intergalactic mission gone horribly wrong! The alien brothers tried to land on Earth, but got lost and are now in the middle of a human maelstrom! Control the UvU drone and bring order to the chaos in this unique adventure.

We've traveled to the past to conquer these fertile lands. Now, you must defend them from the blood cult intent on taking it for themselves. Be careful though: from where their blood is spilled, ancient magicks empower whomever is still alive.

Destroy. Salvage. Repair. Upgrade. PROFIT! A real-time tactical experience where you command your own mercenary outfit of mechs and mercs and adventure through randomly generated missions filled with rewards, glory, and bitter defeat.

Power the Unknown is a strategy game where you build a base on an unexplored planet and defend it from swarms of hostile bugs. Mine resources and generate enough energy to power your ever-growing base.

Thousands of rift creatures. One base. Aim every turret's line of fire, then take the main cannon into your own hands. Take down five bosses across 15 maps, grow stronger between runs, and climb the global leaderboard in Endless. Build and share your own maps on the Workshop.

Trapped in Area 51 on planet Earth, you must solve calculated puzzles to escape this strange planet. Puzzles consist of using enemies' mechanics to your advantage, moving objects to block enemies, and using items that alter parts of the rooms. A spiritual successor to Adventures of Lolo.

Build towers, grow crops, and stop a mad scientist's undead army in this chaotic, comedy-filled tower defense game.

TEP the destroyer is a single player tower defense game where you will face alien monsters and ships in ground and space battles! Your strategy will decide the fate of your people in a sci-fi environment of varying difficulties!

You’re not the ship—you’re a fragile prospector with a jetpack. Haul gold, deploy robots and defend your operation from meteor storms, aliens and pirates. Gear up between expeditions—but mine fast: a rival can take the claim while you’re still alive.

A Roguelike Tower Defense in space with missions to conquer. Can you hold against the spreading alien bosses? Build and upgrade towers against the corruption. Choose your technologies and warpspeed your way to victory.

Negative Energy is a tower defense game with basic RTS mechanics, where your goal is to defend the construction of a Dyson sphere, while fighting against waves of hundreds of enemies ships.

Every map has a code. Build yours, paste it to a friend, beat theirs. A hex-grid tower defense with 14 towers across four upgrade tiers, a hand-crafted 16-mission campaign, and a run mode where 40 relics decide how far you get.

2D Tower Defense game set in a colorful world of Crayons. Over 20 different Maps with plenty of fun Weapons at your ready to defend the Crayon Empire. Can you survive the onslaught?

Starfall Defenders is a classic tower defense game that features unique towers and enemies. It also has an in-game shop system that allows players to purchase better towers, upgrade existing ones, and buy special items like the Atom Bomb, Splash Bomb, and Air Supply.

Stranded on a mining planet, your escape hinges on quarrying gold. Solve challenging puzzles by using unique card abilities to uncover riches and escape in this strategic, card-based puzzle game!

These days, destroying planets has become one of the hottest forms of art in the universe. The process is simple. Choose a meteor, attach some parts, and fire it at a planet. You can even choose your own judges. Would you like to join this world of art?

Box Stocks is a Sokoban game about a robot in space solving puzzles with boxes with unique and peculiar interactions. Sort your way through the galaxy while uncovering the secrets of the mysterious yet inept company that left you and the boxes behind.

Cyber Tower 2048 is an action tower defense game where players fight insectoids by building defenses and developing tactics.

Save Our Solar System brings a fresh look on the tower defense genre. Shape the world around you with a lovable playable character. Harvest metal to upgrade towers. Collect rocket parts to advance to further planets. Fend off endless waves of asteroids.

A unique top-down puzzle shooter where you control a robot with an unusual weapon. Throw your laser gun across gaps, hit switches, and fire the gun to shoot beams that ricochet off walls, destroy enemies, and hit targets. Make every shot count as you solve puzzles in 60+ stages!

A last-stand auto-battler on a dead magic world. Choose your heroes, upgrade their abilities, and try to hold on one more night.

Myrne 6313 is a mix between the extraction shooter genre and corporate life. Survive an hostile office space where each step can be your last. Help HR find their stapler, get chased by security dogs, clear your inbox, fight cultists in the parking lot, learn magic… And more!

Von Neumann Project is about a self replicating probe as it charts the galaxies, peacefully of course. Mine, build, expand, and explore in this sci-fi RTS. Remember to have as little impact on your surroundings as possible and protect yourself at all costs.

Celestial Defense is a sci-fi space tower defense strategy game where tactical base building and resource management determine your survival. Build asteroid belts, evolve planets, and withstand relentless wave survival combat against the Void.

Faith & Shield: 4044 Tower Defense game, where you protect the human settlement from the incoming invaders, robots and other creatures, never seen before on our planet.

Classic tower defense depth with an extra sound waves sync tech garnish

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