ROD: Revolt Of Defense
Explore a random generated space. Find artifacts and treasure maps. Build and develop your base on a flying platform.
80% of 526 Steam reviews are positive$0.99
Games like Defense Protocol
Hooked on the replayable and tense side of Defense Protocol? Browse these games for your next favorite.
Space Cycle
Space resources are the battleground for warring factions. As a Space Defense Officer, protect your faction's assets in a vast, hostile universe. Allocate resources, upgrade defenses, and repel relentless enemy attacks! With over 50 unique units and deep strategy, experience real-time tower defense!
Replayable, Tense, Fast-paced
93% of 179 Steam reviews are positive$1.99Rabbit Comes Home
Play as a lone rabbit sent to the outer space on the journey back home. Defend the ship against relentless alien waves, harvest precious resources, upgrade under pressure, and survive the crushing energy deficit. Every warp brings you one step closer to home… or to ruin.
Replayable, Tense, Fast-paced
$6.99Surface Breaker
Sci-fi rogue-like mining/tower defense game. Mine through a procedurally generated world to discover artifacts. Defend your spaceship from waves of enemies. Discover and spend resources to improve your mining and spaceships combat ability.
Replayable, Tense, Fast-paced
88% of 8 Steam reviews are positive$6.99ROD: Revolt Of Defense
Explore a random generated space. Find artifacts and treasure maps. Build and develop your base on a flying platform. Attack or defend against enemies and save the universe!
Replayable
80% of 526 Steam reviews are positive$0.99Unknown Planet
Your spacecraft has crash landed on an alien planet. Explore this unknown world, mine the resources, build your base, grow farms, craft equipment, fight off the alien lifeforms and survive.
Replayable
97% of 32 Steam reviews are positive$3.99Mars vs. Robots
Defend Mars from humans
Replayable, Tense, Fast-paced
95% of 19 Steam reviews are positiveFreeMine Defender
Fight with AI-controlled drones, explore the mine and extract resources, upgrade your base and plan your defense. Protect your mine
Replayable, Tense, Fast-paced
0% of 1 Steam reviews are positive$2.99Space Mercenary Defense Force
Defend against the alien invasion and take down the mother ship! Utilise branching upgrade trees, unlock new ships, and equip permanent upgrades to create your own unique build and defeat the growing hordes of invaders in this sci-fi action roguelike!
Replayable, Tense, Fast-paced
91% of 11 Steam reviews are positive$4.99Rogue Station
This "space station builder simulation roguelite" puts you in charge of a space station. Fight off enemy ships, fleets and rival stations to dominate your corner of space. Build and upgrade your station, hire and manage your crew. Survive as long as you can.
Replayable, Tense, Fast-paced
77% of 225 Steam reviews are positive$9.99Simple Sky
Fly and shoot your way past hordes of alien oddities, mining planets and upgrading your arsenal to contend with the biggest threats the universe has to offer. Overcome these challenges by mastering the unique choices offered on each run, and transform from a struggling survivor into an apex warship!
Replayable, Tense, Fast-paced
50% of 2 Steam reviews are positive$2.99HYPHAE
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!
Replayable, Tense, Fast-paced
$8.99Space Survivor: Frontier
Survive! Your spaceship is wrecked on stranded alien planet, now it's up to you to survive the chaos! Battle bizarre creatures, explore mysterious terrains, gather resources, and upgrade your gear, can you fight your way through and make it back to Earth?
Replayable, Tense, Fast-paced
100% of 1 Steam reviews are positive$2.99
Cheaper than Defense Protocol
Defend the Town
In Defend the Town, it's up to you to create a successful town.
100% of 2 Steam reviews are positive$0.99
Forbidden Planet
"Forbidden Planet" is a Space Strategy and Tower Defence like Game.
51% of 139 Steam reviews are positive$0.74
SPACE Craft
Your ship crashed on the unknown planet BURA 0-5.1. This planet is not yet unknown to your race and who knows what awaits you here!
71% of 7 Steam reviews are positive$0.99
Mars Survivor
After an asteroid catastrophe, your rocket ship crash-lands in the wilderness of Mars.
73% of 33 Steam reviews are positive$5.99
Regular Spacecraft - Defending the Mothership
Defeat the enemies. Upgrade the spacecraft. Defend the mothership.
95% of 20 Steam reviews are positive$0.99
Priceless Return
Relaxing Idle · Casual Mining · Bring Everyone Home! "Insufficient energy to return... but there's ore ahead!"
80% of 93 Steam reviews are positive$0.99
UFO - Unfortunately Fortunate Organisms
U.F.O is an alien resource management action game where you beam up humans using your spaceship and churn them into resources to upgrade your…
87% of 62 Steam reviews are positive$0.99
Bugs and Bullets
As a lone military engineer on a strange planet you must survive the constant swarms of the hive! Shoot your way through millions of bugs!
75% of 4 Steam reviews are positive$0.99
Orbital Tower Defence
Build towers on rotating orbital rings to defend your planet.
100% of 4 Steam reviews are positive$0.99
ARRIVAL: ZERO EARTH
Fight giant War of the Worlds -style aliens invading Finland during a Winter in the 90's.
80% of 155 Steam reviews are positive$1.19
Hidden gems like Defense Protocol
Space Cycle
Space resources are the battleground for warring factions. As a Space Defense Officer, protect your faction's assets in a vast, hostile universe.
93% of 179 Steam reviews are positive$1.99
Last Stand: Defense
"Last Stand:Defense" is a tower defense-themed Rogue-like game.
81% of 116 Steam reviews are positive$5.99
Stellar Initiative
Stellar Initiative is a roguelike tower defense game where you land on the planet and use your orbit ship to deliver buildings and support you with…
76% of 406 Steam reviews are positivePlayers online now: 6$9.99
ITER-8
Welcome to the surface, ITER employee #8. Mine the Pillar, upgrade your tools, defend your base, reach the top... or die miserably.
70% of 163 Steam reviews are positive$12.99
Rogue Station
This "space station builder simulation roguelite" puts you in charge of a space station.
77% of 225 Steam reviews are positive$9.99
Power of Ten
Fly a star-fighter against a bloodthirsty armada. Gather weapons, resources, and upgrades to help you push back the relentless assault while…
79% of 247 Steam reviews are positivePlayers online now: 1$11.99
Outpost
this is a tower defence game,we need upgrade our weapons to fight waves of enemies,robots can mining diamonds,and we need spent those in many…
74% of 185 Steam reviews are positive$3.99
Dome Keeper
Mine for resources between monster waves, upgrade your dome, and decide how deep you dare to go.
92% of 19,320 Steam reviews are positive$17.99
Desperate Place
Desperate Place is a strategic tower defense game where you play as a crew member who wakes up early on a damaged colonization starship.
66% of 253 Steam reviews are positive$10.99
Astro Looter: Survivor
Explore alien planets to mine resources, kill alien insects, build defense turrets, and survive waves of insect attacks across the galactic frontier.
67% of 387 Steam reviews are positive$1.99
Genesis Alpha One Deluxe Edition
Grow a clone crew, splice alien DNA and hold your starship together as infected corridors close in around you.
73% of 1,570 Steam reviews are positivePlayers online now: 15$3.99
Planetaries
Experience a vast Sci-fi open-world survival TD game set on a distant planet deep in the universe.
58% of 215 Steam reviews are positive$19.99
Newest games like Defense Protocol
Hull Rupture
Manage power, people and a growing ship as you plug hull breaches and race toward the alien homeworld.
73% of 226 Steam reviews are positivePlayers online now: 1,481$13.49
Planet Keeper Program
You were chosen for the Planet Keeper Program. Defend the planet in this retro-inspired incremental game.
100% of 9 Steam reviews are positive$2.99
Surface Breaker
Sci-fi rogue-like mining/tower defense game. Mine through a procedurally generated world to discover artifacts.
88% of 8 Steam reviews are positive$6.99
Stellarcraft
Stellarcraft is a sci-fi tower defense adventure: explore alien planets, gather resources, build defenses, and fend off waves of enemies, solo or in…
88% of 76 Steam reviews are positive$9.99
ITER-8
Welcome to the surface, ITER employee #8. Mine the Pillar, upgrade your tools, defend your base, reach the top... or die miserably.
70% of 163 Steam reviews are positive$12.99
Priceless Return
Relaxing Idle · Casual Mining · Bring Everyone Home! "Insufficient energy to return... but there's ore ahead!"
80% of 93 Steam reviews are positive$0.99
Defend the Town
In Defend the Town, it's up to you to create a successful town.
100% of 2 Steam reviews are positive$0.99
Salvagers
In Salvagers, you command a small crew of greedy explorers that land on abandoned space stations that litter the galaxy, and it's your job to loot…
81% of 59 Steam reviews are positiveFree
Dead Oil
Defend your armored rig against ruthless raiders in this intense roguelike survival driller.
86% of 42 Steam reviews are positive$4.99
Prospector
Land on a distant planet in this chill resource management game.
64% of 112 Steam reviews are positive$14.99
Xeno Rangers
In this Coop Platformer Defense game, you must defend your HQ from enemy hordes by building your base and defenses wisely, while you fight using…
100% of 4 Steam reviews are positive$11.99
Renegade Rush
Renegade Rush is a survivor-style roguelike featuring deep upgrade systems, strategic exploration, and dynamic weapon builds.
100% of 2 Steam reviews are positive$1.99