One Tower: Idle Tower Defense
Endless Waves, Alien Survival
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
One Tower: Idle Tower Defense is an idle tower defense game with a single rule: you never build a second tower. One tower stands between the core and an endless alien invasion, and every run is a chance to upgrade it, survive longer, and turn defeat into permanent power.
Combat fires automatically. You spend the cash each wave earns on attack, defense, and utility upgrades, decide when to trigger your special weapons, and push your tower as far as it can go. When it falls, you keep the coins, return to the workshop, and come back stronger. It is incremental tower defense: short runs, big numbers, and progress that never resets.
ONE TOWER, ENDLESS WAVES
• Defend a single tower against endless waves of aliens, elites, and bosses
• Upgrade damage, attack speed, range, critical chance, health, regeneration, and more during every run
• Layer overlapping defense fields, shields, and mines around your tower
• Push through harder tiers and chase a new best wave every time
IDLE PROGRESS BETWEEN RUNS
• Invest coins in permanent Workshop upgrades that carry into every future run
• Research in the Lab keeps progressing while you are away, so the tower grows even when you are not playing
• Come back to rewards, finished research, and a stronger tower
BUILD YOUR OWN TOWER DEFENSE STRATEGY
• Collect and master Relics that reshape how your tower fights
• Deploy support Drones that amplify damage, boost allies, and burn enemies
• Forge and merge Augments for attack, defense, utility, and special power
• Unlock Special Weapons such as nukes, barrages, and overdrive, and choose the right one for each wave
• Every combination changes the run: a roguelike loop where the decisions are yours and the shooting is automatic
COMPETE AND COLLECT
• Enter tournaments and climb the standings against other tower defense players
• Complete daily missions, milestones, and limited-time events for extra rewards
• Track your best waves, total damage, and progression in your profile
WHY ONE TOWER
Most tower defense games are about placing more towers. One Tower is about going deeper with the one you have. No maps to memorize, no mazes to build: just your tower, an endless wave count, and the question of how far one tower can go. It is an idle defense game you can play in a few minutes on the bus or leave running while you work, and the workshop, research, and relics give it the depth of a full strategy game.
MADE FOR IDLE TD FANS
If you enjoy incremental games, idle games, or classic tower defense TD, One Tower gives you the best of both: the satisfying growth of an idle game and the wave-by-wave tension of tower defense. Runs are short, defeat is expected, and every defeat makes the next run better.
How long can your one tower hold?
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Performance improvements and bug fixes.
The developer, Daniel Kim, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Location
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Daniel Kim
- Size
- 252.3 MB
- Category
- Strategy
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 6 more
- English, French, German, Japanese, Korean, Portuguese, Spanish
- Age Rating
9+
- 9+
- Infrequent
Contests
Contains
Loot Boxes
Advertising
- In-App Purchases
Yes
- Milestone Premium 1 $9.99
- Starter Pack $9.99
- Event Boost $11.99
- Crystal Pack 1 $29.99
- Remove Ads $9.99
- Milestone Premium 5 $49.99
- Milestone Premium 4 $39.99
- Milestone Premium 2 $19.99
- 3,300 Gems $99.99
- 110 Gems $4.99
- Copyright
- © 2026 Coffee Inside
