UnderAttack vs Grid Defense

Defend Earth from alien invasion! Command powerful starships, upgrade devastating weapons, and face epic boss battles across 10 chapters. Easy to learn, impossible to master. Join the fight and become the hero Earth needs! INTENSE SPACE COMBAT • Fast-paced tower defense shooter with smooth touch controls • Dynamic enemy spawn patterns keep you on your toes • Strategic buff system for tactical decisions during missions • Adaptive difficulty that adjusts to your skill level DEEP UPGRADE SYSTEM • Unlock 7 legendary captains with unique combat abilities • 5 weapon types: Cannon, Laser, Missile, Freeze Ray, Chain Lightning • Strategic temporary buffs: shields, damage boost, critical hits • Collect and upgrade 6 different starship classes • Each ship has unique stats and weapon slots EPIC BOSS BATTLES • 50 boss battles across 10 unique planets • Each boss has distinct attack patterns and strategies • Massive capital ships and alien motherships • Challenging boss stages with fewer but stronger enemies PROGRESSION & COLLECTION • 250 stages across 10 planets (25 levels per planet) • 7 legendary captains with unique abilities: - Nova: Damage specialist - Vex: Critical hit master - Iron: Defensive tank - Blaze: Speed demon - Phantom: Stealth striker - Zeus: Lightning lord - Omega: Ultimate commander • Strategic buff system with 15+ temporary upgrades • Data currency for tactical decisions during missions • Adaptive difficulty adjusts based on your performance WHAT PLAYERS SAY "Best mobile space shooter I've played this year!" - 5 stars "Perfect balance of challenge and casual fun" - 5 stars "Finally a shooter that doesn't force ads!" - 5 stars 100% FREE TO PLAY • Download and play completely free forever • Optional in-app purchases for faster progression • No forced ads - watch for bonus rewards only • Full offline play support - no internet required • Fair difficulty with adaptive assistance for struggling players PREMIUM FEATURES • Stunning particle effects and explosions • Original sci-fi soundtrack and sound design • Regular content updates with new chapters and captains • Cloud save - seamlessly play across devices • Optimized for all iOS devices and tablets • Portrait and landscape mode support • One-handed gameplay option PERFECT FOR • Fans of classic arcade space shooters and tower defense games • Players who love boss battles and strategy • Anyone seeking quick 5-10 minute gaming sessions • Collectors who enjoy unlocking characters and ships • Casual and hardcore gamers alike REGULAR UPDATES • New chapters released quarterly • Weekly balance updates based on player feedback • Monthly events with exclusive rewards • Active development team listening to community Join the battle today! Download Under Attack: Idle TD and become the hero Earth needs. Command your fleet, upgrade your arsenal, and prove you're the galaxy's greatest defender!

GRID DEFENSE is a fast, hand-tuned tower defense game about one simple job: hold the line. Six towers. Seven breeds of creep. One winding path. Place your defenses, upgrade under pressure, and stop everything the grid throws at you across 25 escalating waves — then push into endless mode. FREE TO START Download and play the first 10 waves free. Clear wave 10 to unlock the complete game with a single one-time purchase. No ads. No timers. No subscriptions. THE FULL GAME UNLOCKS • All 25 waves + endless mode • A second battlefield — The Quarry, where terrain fights back. Golems terraform the ground as they march, ore pockets pay out gold when cracked, and a keystone wall splits the map — hold it or watch the shortcut open • Tower-smashing GOLEMS — armored bruisers that stop to wreck your towers • WARDENS that raise energy shields — burst them before they recharge • A deployable DWARF hero — a roaming gunner only the wasps can touch, who levels up to repair wrecked towers and mine ore for gold • Bosses and the final victory stand • The global online leaderboard — submit your score and claim your rank SIX TOWERS, EVERY ONE USEFUL Gunner, Cannon, Frost, Venom, Tesla, Sniper — each with upgrades and a role. Freeze a swarm, chain-zap a cluster, poison the tanks, or snipe through armor. There's no single right build. AN ORIGINAL SCORE A title theme by IVEM BEATS plays you in, and every tower fires its own sound — know what's shooting without looking. BUILT FOR TOUCH Designed for the phone from the ground up — tap to build, tap to upgrade, pinch and pan the battlefield. The board fills your screen edge to edge. Landscape, smooth, and playable offline. No ads. No subscriptions. No login. Just you, the grid, and the line you have to hold.