ONE TOWER: Idle Tower Defense

One tower. Endless waves. How far can you climb?

ONE TOWER is an incremental idle tower defense game about a single tower holding the line against neon swarms that never stop. Every kill pays coins on the spot. Spend them on Forge upgrades that carry over from run to run, come back stronger, and push one wave further than last time.

🧠 EVERY 50 WAVES, A NEW THREAT
Swarms, armored plating, brutal giants, fast raiders. Each sector tells you what is coming, and the upgrades that answer it wear a star. Read the threat, build the answer and you will climb.

⚔ BUILD YOUR TOWER YOUR WAY
• 48 upgrades across Strike, Guard and Tech: crits, multishot, ricochet, spikes, mines, a rampart, cheat death and more.
• Every button shows exactly what a purchase changes: now → after.
• Buy levels with cash during every run, and lasting levels in the Forge with coins.
• New Forge tech opens as you climb.

♾ ASCEND FOR ECHOES
From Tier 4 you can Ascend: your Forge, Amps and coins reset (30% of their value comes back as coins) and your climb restarts a few tiers down. Every tier you cleared on that climb becomes Echoes: permanent damage, health and coins. Protocols, Sigils, Research, implants, drones, relics, skins, gems, Prisms and everything bought with money or gems are kept. Always optional.

🛸 DRONES AND 10 PROTOCOLS
• Drones circle the tower, dive on the thickest crowd and work it with their own field: burn, stun, gild, boost.
• Arc Storm, Singularity, Midas Crown and more: unlock them with Prisms and raise three stats on each. The first one unlocks at wave 10.

⏩ YOU SET THE PACE
Every new tier starts at ×1 and opens ×2, ×3, ×4 as you climb it. Everyone goes up to ×4, a Boost or Ad-Free to ×6, VIP to ×10.

👑 BOSSES EVERY 10 WAVES
Juggernauts, Warlords, Beholders and Hive Mothers, with elites behind them, under a sky and a soundtrack that build as you climb.

🃏 SIGILS, RESEARCH AND MORE
• 32 Sigils in 3 rarities, 7 stars each.
• Research that keeps working while you are away.
• Boons, Implants and the Warden for the long climb.

🏆 A REASON TO COME BACK
• More than 100 secret trophies, each hidden until you earn it.
• Tournaments twice a week: from wave 50 you are entered automatically under your player name (or a generated one), and your next run is your attempt (Settings can switch this off). 30-seat brackets, real players first, computer rivals in empty seats, leagues Copper to Legend.
• A world leaderboard ranked by tier and wave.
• Daily missions and two-week events with permanent Relics.
• The Vault: while you are away your tower fills a Vault with coins for up to 3 h. Open it with one rewarded video, or have it collected automatically with any permanent purchase or an active Tower Pass (Ad-Free 4 h, Tower Pass 8 h, VIP 12 h).

OPTIONAL PURCHASES
ONE TOWER is free to play: every tier, Sigil, Protocol, Research and upgrade can be reached without paying. Optional purchases: gem and Prism packs, bundles, coin licenses, Ad-Free, VIP, Echo Amplifier, Premium Milestones, tier packs, Event Boost, a Starter Pack, the Founder's Vault (until 31 January 2027) and the Tower Pass subscription (renews monthly at the price shown until you cancel in Google Play → Subscriptions). Only sold, never earned: no ads, the ×8 and ×10 speeds, coin licenses, extra Echoes, the automatic Vault, the 21st Sigil slot and some skins. You always see the exact price before you confirm.

RANDOM ITEMS — ODDS PUBLISHED
Sigil chests: Common 80%, Rare 17%, Epic 3%; an Epic Sigil is guaranteed within 40 chests. Implant pulls: Common 68.5%, Rare 29%, Epic 2.5%; an Epic implant is guaranteed within 60 pulls. The game shows both next to every chest and pull. In Belgium, chests and implant pulls are not sold for gems.

ADS
Rewarded videos only, and only when you tap: the reward is shown first. Ad-Free and VIP owners never see an ad.

No account needed. Your progress lives on your device.

Recent changes:
2.1.0 - Daily Run
- Daily Run: one seeded run a day, the same for everyone. A fresh tower, one try, a daily board, a few gems and a card to share.
- New names, same progress: the Workshop is now the Forge, Labs are Research, Cards are Sigils, Ultimate Weapons are Protocols and Power Stones are Prisms.
- Your progress and every purchase are kept.