Orbit Siege - Tower Defense

Contains adsIn-app purchases
Content rating
Everyone
10+
Downloads
Content rating
Everyone
Learn more
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About this game

Welcome to Orbit Siege – Idle Tower Defense!

Do you have what it takes to defend the last orbit against relentless waves of enemies? Experience the perfect blend of classic tower defense strategy and addictive idle gameplay right on your mobile device!

KEY FEATURES:

🚀 Unique Tower Defense Strategy: Build and upgrade your defensive towers to withstand countless waves of increasingly powerful enemies. 🃏 Magic Skill Card System: Collect and unleash powerful skill cards to turn the tide of battle in an instant. From massive damage to freezing enemies – the power is in your hands! 💎 Permanent Upgrades: Use diamonds and collected resources to permanently upgrade your tower's power, attack speed, and range. 💤 Idle Gameplay: Even when you're away, your towers continue to fight and accumulate rewards for you. Come back stronger than ever! 🌌 Stunning Graphics & Effects: Enjoy vibrant space battles with dynamic skill effects and smooth animations. 🏆 Endless Challenges: Conquer thousands of waves and climb the leaderboard to prove your tactical mastery.

Are you ready to build an impenetrable fortress? Download Orbit Siege – Idle Tower Defense and start your orbit defense journey today
Updated on
Jun 2, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
App info and performance and Device or other IDs
No data collected
Learn more about how developers declare collection
Data is encrypted in transit
Data can’t be deleted

What’s new

Randomized enemy variations to reduce visual repetition, with a unique boss for each tier.
Diverse visual effects, including damage colors, attack effects, and combat animations.
Daily reset rewards to encourage regular play.
A variety of skills with branching upgrade paths, allowing different build strategies.