Prism Defense

Draw, merge, turn the tide

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

You never choose your tower. Draw, merge, and see how many waves you can hold. A neon-vector random merge tower defense. 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. Your records, Prisms, palettes and achievements are saved on your device and can also sync through iCloud when it is enabled for Prism Defense. You can keep playing offline.

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• Sync records, Prisms, palettes and achievements with iCloud enabled for this app. • Learn the controls with a step-by-step practice guide. • Choose daily-challenge reminders in Settings. • When ads are available, refresh each boss reward once by watching an ad. • Earn an achievement for a 7-day daily streak. • Normal bests use score. Fixed best records reverting to older values. • Plus minor bug fixes.

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
    • User Content
    • Identifiers
    • Usage Data
    • Diagnostics
  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Purchases

Privacy practices may vary, for example, based on the features you use or your age. Learn More

The developer has not yet indicated which accessibility features this app supports. Learn More

Seller
Dongmin Yu
Size
38.4 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.
Languages
English and Korean
Age Rating
4+
In-App Purchases
Yes
Copyright
© 2026 Dongmin Yu. All rights reserved.