UFO Siege: Tower Defense
Build Towers, Slay Dragons
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
25 kinds of invaders, 8 towers to unlock and real dragons. Can you hold the castle to the end?
UFOs, monsters and dragons are marching on your castle. Build towers, upgrade them and hold the line!
UFO Siege is a colorful 3D tower defense game that keeps surprising you: every few levels a new tower unlocks and a new enemy shows up with its own trick.
8 TOWERS TO UNLOCK
• Ballista – fast arrows, can hit flyers
• Cannon – explosive splash damage
• Frost – slows every enemy around it
• Poison – toxic damage over time that ignores armor
• Catapult – huge boulders with the longest range
• Dragon Slayer – the ONLY tower that can hurt dragons
• Lightning – chain lightning that stuns
• Fire – flames that burn through armor
25 KINDS OF INVADERS
Slimes that split in two, ghosts that fade out, crabs with hard shells, healers, teleporting aliens, berserkers, yetis, fire demons, a skull-summoning Cthulhu and a golden chicken worth a pile of gold. Every new enemy is introduced with a card that tells you how to beat it.
DRAGONS!
Dragons fly straight over your maze and shrug off every ordinary tower. Only Dragon Slayer towers can bring them down, so plan ahead!
20 HAND-MADE LEVELS
From cherry blossom hills and autumn woods to a volcano, glaciers and the Elder Dragon's lair. Every level has its own look and weather.
POWERS
Drop a Meteor, Freeze the whole map or start a Gold Rush when things get tight. Call waves early for bonus gold.
• Plays offline, no account needed
• Short levels, perfect for a quick break
• Free to play, with optional videos for a second chance
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Cuong Ho, 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
- Identifiers
- 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
- Cuong Ho
- Size
- 92.3 MB
- Category
- Strategy
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 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
- Age Rating
9+
- 9+
- Infrequent
Cartoon or Fantasy Violence
Contains
Advertising
- Copyright
- © 2026 Cuong Ho