Planet Defense: UFO

Your planet is under attack. Hold the line. Planet Defense: UFO is a fast, tactile space tower-defense: your home world sits at the center, alien ships swarm in from every direction, and every decision happens in seconds. Tap to build satellite turrets, upgrade your firepower mid-battle, and collect the coins your planet generates — then push one level further. BUILD YOUR ORBITAL DEFENSE • Tap "+" slots to deploy satellite turrets around your planet • Upgrade 8 combat lines mid-run: damage, fire rate, range, bullet speed, satellite speed, pierce, repair and shields • Every level unlocks more build slots — and brings bigger waves FIGHT A REAL INVASION • 6 enemy types with their own tricks: swarmers, speeders, tanks, splitters, exploders and turret-hunting shooters • Enemies get tougher with every city — your defense has to evolve • Lose the planet and you restart the city: your permanent progress always survives GROW STRONGER FOREVER • Earn cores from kills and victories, even when you lose • Spend them on permanent upgrades: starting damage, planet HP, coin boosts and more • Deep upgrade curves reward long-term investment ROTATING LIVE EVENTS • A new planet needs you every 2 days: defend Mars, Venus and Titan • 5 difficulty tiers from Normal to Nightmare — pick your challenge • Complete event tasks for huge core rewards, then admire your winning defense PLAY YOUR WAY • Sessions as short as one level or as long as one more city… again • Optional rewarded boosts — no forced ads, no energy system • Fully playable offline; localized in English, Español, Русский, 中文 and Português Can you hold every city?