Polygon Defense: Idle TD

How far can you get? Polygon Defense is a tower defense game with a clean geometric look: endless waves, ever-stronger enemies — and a defense that grows mightier every run. Play tactically for five minutes or let it run for hours: you set the pace.

BUILD YOUR DEFENSE
• 10 unique towers — from the rapid Tri Cannon to poison, frost, chain lightning and the Star Laser
• 3 upgrade paths per tower, then prestige for permanently stronger tiers
• A new procedurally generated map every run
• Every 5 waves: pick 1 of 3 random boosts and shape your run

ENDLESS WAVES, REAL VARIETY
• Bosses every 10 waves, elite mutations, armor, healers, splitters and phasing enemies
• From wave 100: challenge waves with special rules and bonus rewards
• Milestone chests every 25 waves — automatic, no interruptions

IDLE WHEN YOU WANT IT
• Auto-waves with SAFE mode: keeps running, only stops when enemies break through
• Auto-upgrades, auto-build and card auto-pick for fully hands-free runs
• Endless Protocol: automatically restarts after game over
• Rush button: skip waves up to just below your best record
• Offline progress: your towers keep fighting while the app is closed

PERMANENT PROGRESSION
• Earn prisms and unlock 30+ permanent meta upgrades
• Card collection with passive bonuses and active abilities (from wave 100)
• Research lab with real-time research (from wave 200)
• Daily tasks, achievements and login rewards

FAIR & PLAYABLE OFFLINE
• Completely free to play, no account, no internet required
• No forced ads — ads are strictly optional for bonus rewards
• Available in English and German

One tap, one wave — and suddenly it's 2 a.m. Have fun!