Galaxy Defender: Astro TD
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Protect the Sun and defend the galaxy in this addicting orbital Tower Defense
- Downloads
- 2K+
- on Google Play
- Price
- Free
- No in-app purchases
- Updated
- Oct 12
- 2026 · v1.1.5
Screenshots
About Galaxy Defender: Astro TD
Defend the Sun and save the galaxy!
Lead humanity's defenses in deep space. Galaxy Defender is a space strategy Tower Defense game (offline TD) where you must protect the central star against relentless waves of alien invaders. Plan your defense strategy using planetary orbits and position your weapons at the right place and time to become the ultimate galaxy defender.
KEY FEATURES:
⚡ Tactical Planetary Orbits: Build your defense towers directly on the orbits of the planets. Use the orbital rotation to your advantage to maximize coverage and fire range in this space strategy simulator.
🚀 High-Tech Space Arsenal: Utilize 6 unique and upgradeable weapons:
Fast Lasers: Swift and continuous beam attacks.
Area Missiles: High explosive splash damage.
Plasma Cannons: Powerful thermal energy blasts.
EMP Generators: Slow down enemies with electromagnetic pulses.
Cryo Towers: Freeze invading ships to delay their progress.
Ray Towers (Allied Strikers): Devastating chain electrical attacks.
👾 Evasive and Challenging Enemies: Face different types of alien ships. Some are extremely fast, others perform evasive maneuvers to dodge your shots, and capital boss ships can fire homing missiles at your star.
💎 Global Upgrades (Tech Tree): Accumulate credits during missions to permanently upgrade your weapons' damage, rotation speed, and Sun energy regeneration.
⏱️ Up to 3x Speed: Control combat speed in real-time. Instantly switch between 1x, 2x, and 3x for fast and dynamic battles.
🏆 Achievements & Daily Missions: Complete long-term challenges and daily missions with scaled goals to earn bonuses and extra credits.
📴 100% Offline Gameplay (No Internet): No network? No problem. Play and protect the universe wherever you are without needing a constant connection.
Take strategic command of the defenses and prove the galaxy has a worthy protector. Download Galaxy Defender: Tower Defense for free today!
Lead humanity's defenses in deep space. Galaxy Defender is a space strategy Tower Defense game (offline TD) where you must protect the central star against relentless waves of alien invaders. Plan your defense strategy using planetary orbits and position your weapons at the right place and time to become the ultimate galaxy defender.
KEY FEATURES:
⚡ Tactical Planetary Orbits: Build your defense towers directly on the orbits of the planets. Use the orbital rotation to your advantage to maximize coverage and fire range in this space strategy simulator.
🚀 High-Tech Space Arsenal: Utilize 6 unique and upgradeable weapons:
Fast Lasers: Swift and continuous beam attacks.
Area Missiles: High explosive splash damage.
Plasma Cannons: Powerful thermal energy blasts.
EMP Generators: Slow down enemies with electromagnetic pulses.
Cryo Towers: Freeze invading ships to delay their progress.
Ray Towers (Allied Strikers): Devastating chain electrical attacks.
👾 Evasive and Challenging Enemies: Face different types of alien ships. Some are extremely fast, others perform evasive maneuvers to dodge your shots, and capital boss ships can fire homing missiles at your star.
💎 Global Upgrades (Tech Tree): Accumulate credits during missions to permanently upgrade your weapons' damage, rotation speed, and Sun energy regeneration.
⏱️ Up to 3x Speed: Control combat speed in real-time. Instantly switch between 1x, 2x, and 3x for fast and dynamic battles.
🏆 Achievements & Daily Missions: Complete long-term challenges and daily missions with scaled goals to earn bonuses and extra credits.
📴 100% Offline Gameplay (No Internet): No network? No problem. Play and protect the universe wherever you are without needing a constant connection.
Take strategic command of the defenses and prove the galaxy has a worthy protector. Download Galaxy Defender: Tower Defense for free today!
What’s new
Version 1.1.5 · Updated October 12, 2026
- Visual layout and button alignment fixes for dialogs and modals in landscape/PC mode. - Optimized weapon damage calculations and global upgrades consistency during gameplay. - General stability and performance improvements.
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Alternatives to Galaxy Defender: Astro TD
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| App | Rating | Price | Installs | Last updated | Compare |
|---|---|---|---|---|---|
| Galaxy Defender: Astro TD | – | Free | 1,000+ | Oct 12, 2026 | |
| Asteroids 2.0 | – | 1.99 USD | 10+ | Mar 24, 2026 | Compare |
| SKY STRIKE | – | 2.99 USD | 50+ | Aug 19, 2026 | Compare |
| Rule1A Incremental: Idle Forum | 2.4 / 5 | 4.99 USD | 1,000+ | Apr 25, 2026 | Compare |
| MEGAVOID: Roguelike | 3.9 / 5 | 0.05 USD | 5,000+ | Jul 27, 2026 | Compare |
| Rysiek Pro: IO Play | – | 1.49 USD | 1+ | Mar 17, 2026 | Compare |
| [365fun] Mini Fighter | – | 0.49 USD | 1,000+ | Oct 8, 2026 | Compare |