Zenith Tower: Idle Defense

Defend the core. Upgrade everything. Survive endless waves.

Zenith Tower is a deep idle tower defense game where your single tower stands against relentless waves of enemies approaching from all directions. Upgrade your stats, unlock devastating weapons, and push further than ever before.

SIMPLE TO PLAY, IMPOSSIBLE TO MASTER
Enemies swarm from every angle toward your tower core. If they reach it, they deal damage. Your job? Survive as long as you can, earn coins, upgrade your tower, and come back stronger every run.

9 ULTIMATE WEAPONS
Unlock and master an arsenal of screen-clearing ultimate abilities:
- Black Hole: Pull enemies into an inescapable gravity well
- Spotlight: Focus a devastating beam that scorches everything in its path
- Death Wave: Unleash a shockwave that damages all enemies on screen
- Chain Lightning: Arc electricity between enemies for chain kills
- Poison Swamp: Create toxic zones that melt enemy health
- Land Mines: Plant explosive traps in the enemy path
- Smart Missiles: Lock on and eliminate high-priority targets
- Chrono Field: Slow time itself to give your tower the edge
- Golden Tower: Supercharge your tower damage output

6000+ LEVELS OF PERMANENT UPGRADES
The Workshop is your long-term progression engine. Invest coins across runs to permanently boost Damage, Health, Attack Speed, Critical Chance, Range, and more.

CARD COLLECTION AND LOADOUTS
Collect powerful cards from the gacha system. Build strategic loadouts of up to 28 cards that fundamentally change how your tower plays.

LABORATORY RESEARCH
Run up to 5 simultaneous research projects to unlock new capabilities.

21 DIFFICULTY TIERS
Progress through escalating tiers that introduce new enemy types and modifiers.

IDLE AND OFFLINE EARNINGS
Close the app and come back to find coins waiting. Zenith Tower respects your time with meaningful offline progress.

TOURNAMENTS AND LEADERBOARDS
Compete globally with special tournament battle conditions.

FREE TO PLAY
Jump right in. Optional purchases available for players who want to accelerate their progress.