Prism Defense
Draw, merge, turn the tide
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Draw, merge, turn the tide.
Every run starts with a different board. Draw a random tower onto a random slot, then merge matching towers to make one stronger. The catch: it rerolls into a new type. The real skill is making the board you get work.
One clever merge can unlock the answer you need. One rushed merge can leave a lane open. Move towers into better coverage, sell the pieces that do not fit, or call the next wave early for extra gold when you are ready to take the risk.
Turn trouble into a target
Healers restore their pack, splitters leave two children behind, and shields block hits instead of damage. Set each tower type to FIRST, STRONG, or SPECIAL to take down the threat that matters now.
The pressure never lets up
Enemies grow stronger every wave. Every fifth wave brings a boss that rewards you with bonus gold at HP milestones, then calls escorts when its health is halved.
A fresh challenge every day
Daily Challenge gives every player the same seed. Try a new board, beat your best, and share the result when the run is over.
New to the defense?
A short first-game guide shows you how to draw, merge, move, swap, and choose your strategy. You can always check How to Play later.
5 towers, 7 tiers
- Laser — rapid beams at the front-runner.
- Cannon — slow shells with splash damage.
- Frost — chills the target and nearby enemies, slowing them.
- Sniper — reaches anywhere on the board, for heavy damage.
- Volt — lightning that chains between enemies.
Neon vector graphics, in English and Korean. Earned Prisms and cosmetic palettes are saved safely on your device.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Prism Defense 1.5.0
• Streak shields now keep your Daily streak alive when you miss a day. You start with one, earn another every 7 days in a row, and can hold up to 2.
• The Daily's best of the day is now ranked by score, and Home and shared results show the score first.
• You can now add a 3–5 character signature when you share a Daily result.
• Plus other small updates.
The developer, Dongmin Yu, 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
- Diagnostics
Data Linked to You
The following data may be collected and linked to your identity:
- Location
- Identifiers
- Usage Data
- Diagnostics
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Dongmin Yu
- Size
- 37.6 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 and Korean
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- Prism Premium $2.99
- Copyright
- © 2026 Dongmin Yu. All rights reserved.
