Cosmic Summon
Gacha Tower Defense Strategy
Free · Designed for iPad. Not verified for macOS.
Summon heroes, merge to evolve, and defend against 28 enemy types across 50 constellation-themed waves. A unique gacha tower defense experience!
Cosmic Summon is a unique blend of gacha summoning and tower defense strategy. Summon powerful heroes, place them on the battlefield, and defend your wall against endless waves of enemies — all under the stars of real constellations.
SUMMON & COLLECT 12 UNIQUE HEROES
Each hero brings a distinct combat style to the battlefield:
• Wind Piercer — Piercing shots that penetrate multiple enemies
• Blaze Caster — Fire splash dealing area damage
• Frost Weaver — Slows enemies with freezing attacks
• Thunder Chain — Chain lightning bouncing between targets
• Cannon Lord — Devastating splash damage in a wide radius
• Wind Dancer — Summons tornadoes that damage and slow
• Venom Curse — Poisons enemies with damage over time
• Shock Guard — Shockwave knockback to push enemies back
• Armor Breaker — Curse attacks that shred enemy armor
Plus 3 support heroes: Wall Keeper (heals your wall), Gold Digger (generates gold), and Melodist (buffs team attack speed).
MERGE TO EVOLVE
Combine two heroes of the same type to upgrade them. Progress through 7 rarity tiers — from Spark to the legendary Genesis rank. Higher rarities unlock stronger abilities and stunning visual effects. Strategic merging is the key to surviving later waves.
FACE 28 ENEMY TYPES + BOSSES
Every few waves, new enemy types appear with unique abilities:
• Stealth lurkers that vanish from sight
• Splitters that divide into smaller enemies on death
• Healers that restore nearby allies
• Chargers that rush your wall at extreme speed
• Reflectors that bounce damage back
• Summoners that spawn endless minions
• And many more — each demanding a different strategy.
Boss encounters every 5 waves test your entire defense.
50 CONSTELLATION-THEMED WAVES
Battle under the stars of real constellations — from Aries to Orion, Cassiopeia to the Southern Cross. Each wave features a beautifully rendered constellation as your battlefield backdrop.
TARGETED SUMMON
Choose exactly which hero you want with the Select feature. Pick your favorite hero and add them to your army — a strategic advantage when you need a specific ability to counter the next wave.
KEY FEATURES
• Free-to-play with rewarded video ads
• 12 heroes × 7 rarity tiers = 84 hero variations
• 28 enemy types with unique abilities + boss battles
• Merge system with unlimited progression potential
• Real constellation artwork for 50 wave backgrounds
• Auto-battle with strategic hero placement
• Support heroes that heal, buff, and generate gold
• Battle statistics tracking across all games
Download Cosmic Summon and defend the stars!
Ratings & Reviews
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The developer, Maojian Tang, 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
- Maojian Tang
- Size
- 35.4 MB
- Category
- Strategy
- Compatibility
Requires iOS 12.0 or later.
- iPhone
Requires iOS 12.0 or later. - iPad
Requires iPadOS 12.0 or later. - iPod touch
Requires iOS 12.0 or later. - Mac
Requires macOS 11.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Tang Maojian