ONE TOWER: Idle Tower Defense

IADevelopment

Contains adsIn-app purchases

About this game

ONE TOWER — one tower, endless waves, and numbers that never stop climbing.

Enemies pour in from both sides. Your tower is the only thing standing between them and the edge of the map, and bosses force their way through every 10 waves. Upgrade what you have, spend what you earn, and push one wave further than last time. When the tower finally falls, you bank your coins, rebuild stronger, and go again.

BUILD THE TOWER YOU NEED
Spend coins between waves on Damage, Attack Speed, Critical Chance, Critical Factor, Range and Multishot — every coin you hold back is a wave you do not survive. Carry that power forward in the Workshop, where permanent upgrades keep stacking run after run.

GO DEEPER EVERY TIME
• 9 active skills — Chain Lightning, Smart Missiles, Chrono Field, Nova, Black Hole, Swamp, Spotlight, Mines and Shield — each levelled up with the coins you earn.
• 14 collectible cards in 4 rarities (Common, Rare, Epic, Legendary), equipped into 6 loadout slots as you unlock them.
• Prestige from wave 20 into Core Shards. Every shard is a permanent multiplier — 2% damage and 1% coins each, forever.
• 20 tiers of difficulty: tougher enemies, far richer rewards.
• Research and Labs: 3 research branches and 8 long-running lab projects that keep powering you up in real time.
• Daily challenges that rewrite the rules — Boss Rush, Coin Rain, Speed Rush, Frail Tower, Swarm Night and Head Start.
• Live in-game events that change the world for a limited time, such as a Double Coins event.
• Wave milestones that pay out gems and card chests — and then repeat every 25 waves.
• Cosmetic tower skins, including the Obsidian tower.

IDLE — EARN WHILE YOU ARE AWAY
Close the game and the tower keeps working. Come back to as much as 8 hours of banked offline income, claimable in one tap. Idle Lab research raises what your tower earns while you are gone.

OPTIONAL PURCHASES
ONE TOWER is free to play. Everything in it — upgrades, cards, skins and gems — can be earned by playing: gems come from wave milestones, and card chests can also be bought with coins. Nothing is paywalled.
If you would rather move faster, you can buy:
• Gem packs: Pouch (250 gems), Satchel (700), Crate (1,500), Vault (3,500), Treasury (6,000), Citadel (13,000) and Empire (25,000).
• Starter Pack (one-time): 500 gems, a 1-hour 2× damage boost and the Obsidian tower skin.
• VIP Pass (one-time): 500 gems and permanent 2× offline income.
• Tower Pass (subscription): 25 gems and a free card chest every day, plus 2× offline income while it is active. It renews automatically at the price shown until you cancel. Manage or cancel any time in Google Play → Subscriptions.
Purchases are processed by Google Play. You see the exact price in your own currency before you confirm.

CARD CHESTS ARE RANDOMIZED — ODDS PUBLISHED
A card chest contains one randomly selected card, and duplicates level that card up. Odds for every chest: Common 62%, Rare 25%, Epic 10%, Legendary 3%.
Chests come from free wave milestones, from in-game coins (2,500 coins, rising each time you buy one) or for 120 gems — and gems are earned in game as well as sold in packs. The odds are the same however you open a chest.

THIS BUILD
No account, no cloud save, no multiplayer — your progress lives on your own device. This version contains no third-party advertising. Portrait, one tap to start, and always one more wave.

Play ONE TOWER. There is always one more wave.

What’s new

ONE TOWER 1.3.3
- Many more enemies per wave: a horde instead of a trickle, with a faster
spawn rate and enemy health, damage and rewards rescaled to match.
- Kills are always visible: attack range is capped so enemies are still on
screen when your tower destroys them.
- Rebalanced progression: enemy scaling is flatter and upgrades cost more,
so upgrades keep mattering far longer.
- Fixed: bullets could hang in mid-air when a wave ended.