Space Station: Defender

Space Station: Defender is a sci-fi tower defense game where you command the last orbital fortress against relentless waves of alien invaders. Build turrets, expand your station, and survive 100 increasingly brutal levels across 5 enemy tiers. STRATEGIC 360° DEFENSE Enemies approach from every direction. Position turrets along your station's corridors, upgrade them to devastating power, and deploy special abilities at critical moments. Every placement matters — one gap in your defenses and the hull takes damage. BUILD & EXPAND YOUR STATION Start with a simple core and grow into an orbital fortress. Purchase corridor expansions, unlock new turret slots, and design your layout to create deadly killzones. With 20+ expansions possible, no two stations look the same. 6 TURRET TYPES, 5 UPGRADE TIERS From rapid-fire Blasters to devastating Railguns and area-denial Flak Cannons, each turret serves a unique tactical role. Upgrade through 5 tiers to unlock maximum firepower. 5 POWERFUL ABILITIES Turn the tide with Ion Pulse, Missile Barrage, Gravity Well, Solar Flare, and Quantum Rift. Time them right and watch entire enemy waves evaporate. 100 LEVELS OF ESCALATING CHALLENGE Face Scouts, Cruisers, Bombers, Carriers, and massive Bosses — each with Elite variants that demand new strategies. Every 10 waves ramps up the pressure. PRESTIGE & REPLAY Beaten level 100? Prestige to reset your progress with powerful permanent bonuses and prove your mastery all over again. GAME CENTER LEADERBOARDS & ACHIEVEMENTS Compete globally across 5 leaderboards including Highest Level, Total Kills, Daily Kill Count, Longest Win Streak, and Total Levels Won. Earn 16 achievements from First Blood to Station Legend. ARMORY UPGRADES Invest star credits into permanent upgrades: boost turret damage, increase hull strength, enhance shields, and more. Your station grows stronger with every session. No energy timers. No pay-to-win. Just pure strategic tower defense.