# Idle Planet Defender: Space TD — Idle Space Tower Defense > Idle Space Tower Defense (iPhone/iPad app by Mert Burak Dervisoglu.) - Source: https://appshunter.io/ios/app/idle-planet-defender-space-td/id6811181144 (this page in markdown: same URL + `.md`) - Developer: [Mert Burak Dervisoglu](https://appshunter.io/developer/6811181146) - Category: Games, Entertainment, Action, Strategy - Price: Free with in-app purchases - Age rating: 12+ - Requires: iOS 15.0 · 435 MB - Languages: American English, Arabic, Dutch, French (France), German (Germany), Hindi, Indonesian, Italian, Japanese, Korean and 8 more - Released: 2026-09-16 - Data updated: 2026-10-07 ## What is Idle Planet Defender? GET READY. EARTH NEEDS YOU. An alien invasion has reached Earth. Fortunately, humanity has prepared the only reasonable response: An unreasonable amount of firepower. Welcome to Idle Planet Defender — an idle strategy and space defense game where you defend Earth, destroy alien fleets, upgrade powerful weapons, unlock powerful research upgrades and features, and fight many different alien forces across the galaxy. The aliens brought a fleet. We brought weapons. BUILD THE PLANETARY DEFENSE GRID Turn Earth into the most heavily armed planet in the galaxy. Deploy and upgrade Tesla weapons, heavy cannons, scatter guns, orbital weapons, satellites, combat drones, cryogenic technology, chain lightning and several weapons that probably should not have passed safety testing. Then activate your Ultimate Weapons. Stop time. Open a black hole. Turn enemy airspace into a regrettable life decision. RESEARCH. UPGRADE. OVERKILL. Unlock 90+ research nodes and continuously improve your defense grid with powerful upgrades, systems and enhancements. Increase your firepower. Strengthen your economy. Unlock new technology. Build better weapons. Everything you unlock stays with you. Human progress is permanent. The aliens, less so. 50 ENEMY SHIPS. 50 MASSIVE BOSSES. Fight 50 different alien ship classes with unique threats, defenses and increasingly questionable amounts of armor. Crack their shields. Destroy their armor. Watch massive warships fall apart above the planet they made the administrative mistake of invading. They have numbers. You have boom. Do the math. DEFEND MORE THAN EARTH Earth is only the beginning. Expand your planetary defense operation across new worlds including Mars, Inferno, frozen planets, storm-covered worlds and other locations humanity discovered and immediately decided needed guns. Claim them. Upgrade them. Defend them. THE DEFENSE GRID NEVER STOPS Your automated weapons attack incoming enemies while you focus on strategy, research and upgrades. Optimize your build. Grow stronger. Destroy bigger fleets. Then prepare for the next invasion. CLIMB THE RANKINGS Complete daily missions, collect supply drops, spin the Stellar Wheel, earn rewards, progress through the Milestone Pass and climb the global rankings. Somewhere in the galaxy, another commander thinks their defense grid is better than yours. Prove them wrong. ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Research Surge II | $4.19 | one-time | | MINING PRIVILEGE | $2.09 | one-time | | Research Surge IV | $26.49 | one-time | | Starter Pack | $1.09 | one-time | | Research Surge I | $1.09 | one-time | | Research Surge III | $10.49 | one-time | | Bronze Supply Drop | $2.09 | one-time | | Gold Supply Drop | $10.49 | one-time | | Silver Supply Drop | $4.19 | one-time | | Void Supply Drop | $26.49 | one-time | ## Is Idle Planet Defender safe? Not enough ratings yet to assess Idle Planet Defender. ## Is Idle Planet Defender legit? Idle Planet Defender: Space TD has limited verification signals. The AppsHunter Legitimacy Score for Idle Planet Defender is 58 out of 100 points across 7 verification signals from App Store and developer data. ## Version history (last 5 releases) ### 2.0.25 — 2026-10-03 Commander, version 2.0.25 is here. Galactic Wars, our new event mode, is ready for battle, the game has a fresh new look from the lobby to the reward screen, and the Research Lab now lets you plan ahead with a research queue. GALACTIC WARS: THE EVENT MODE IS HERE * Galactic Wars is a limited-time event. Open it from the crest in the bottom-left corner of your lobby. * Pick your battlefield: choose any tier you have unlocked and compete in it for the whole event. Your choice stays locked until the event ends. * War Tickets: each ticket gets you one war run. You get a free ticket every day of the event, and more from the event shop and supply crates. * A tougher fight: enemies have more health and hit harder, and upgrades cost more. From Tier 5 you will meet the gods themselves. * Every war run is played in one sitting, but every wave you clear counts. * Earn Valor: every boss wave you clear rewards Valor, and higher tiers earn more. You also collect Coins, Flux and Hourglass time. * War missions unlock step by step and earn XP that opens 10 supply crates. * The Valor shop: spend Valor on Turret Chips, Ultimatter, Gems, Flux, Hourglasses and Coin packs. * Valor and tickets reset when the event ends. RESEARCH LAB: RESEARCH QUEUE * When all your labs are busy, queue your next researches in the new UP NEXT list. * Queued research starts automatically the moment a lab becomes free, even while the game is closed. * The price is paid when you queue, plus a small queue fee for each waiting level. * Reorder your queue with the arrows. Removing a research refunds the price of its waiting levels; the queue fee is not refunded. A FRESH NEW LOOK * Settings: one clean window with GAME, GRAPHICS and ACCOUNT tabs. * Rewards: a brand-new REWARDS screen shows everything a claim pays on one reward grid. * Cards: a new METEOR DROP scene, and OPEN AGAIN lets you pull again right there. * Mail: gifts glow gold and sit at the top, unread mail is marked NEW. * Bag: ALL, USABLE, TURRET CHIPS and EVENT tabs, plus a new Turret Chip chooser. * Daily Supply: a streak line and tomorrow's reward with a countdown. * While You Were Away: a new design with a big golden payout. * Arsenal: clear DAMAGE and FIRE RATE gauges and a new PROJECTILES row. * Coin Boost: the breakdown shows your total on top, and tapping any row takes you to where that bonus comes from. * Large numbers are now grouped with dots for easier reading, for example 33.819.309. * New sounds across the game, a new lobby background for BASTION, and a new app icon. OPTIMIZATION & BUG FIXES * The first cast of each Ultimate in a battle is now smooth. * Reward and card effects open instantly. * The lobby now uses less battery and runs cooler. * Normal Tier 5 battles no longer include Tier 6 enemies. * Resume and Auto Retry can no longer start a run on a tier that is still locked. * Fixed the Coin Boost value in the lobby sometimes showing an outdated number. ### 2.0.24 — 2026-09-29 ACT II begins with Tier 6, your planet gains a brand-new shield, Ultimates hit harder than ever, and large-scale battles have received major performance improvements. ACT II: TIER 6 IS OPEN * Reach Wave 751 in Tier 5 to unlock Tier 6 and the ACT II page in your lobby. * Tier 6 introduces the Crystal Lineage: 10 new enemies and 10 new bosses, each with their own art, sounds, and abilities. Some carry crystal plates that block your shots and regenerate over time. * Tier 6 has its own Milestones, Royal Pass, and Galactic Rankings tab. PLANET SHIELD * Reach Wave 10 in Tier 5 to unlock the Planet Shield: a second bar in front of your health, surrounded by a glowing energy dome around your planet. * Every enemy hit is split between your Health and Shield. Tougher enemies and bosses push more of their damage through to your Health. * After a short period without taking damage, the Shield begins to recharge. * Upgrade your Shield through the Workshop, during battle, in the Research Lab, with the new Shield Card, and through the new Shield Bonus on the turret screen. ULTIMATES HIT HARDER * Solar Lance, Supernova, Singularity, and Armageddon now have a guaranteed minimum damage value that increases as the Ultimate is leveled. * Ultimates now ignore Armor and Guard Shields. * The Ultimate window includes a new BOSS DAMAGE value. * Singularity’s final collapse now delivers the majority of the ability’s total damage. FLUX AND HOURGLASS: STEADY ALL DAY * The daily earning cap has been removed. Replaying waves you have already completed now rewards Flux and Hourglass time at a steady rate. * New record waves still award their full rewards. * Miner Drones now earn more Flux in higher Tiers. BALANCE AND PRICE CHANGES * Death Defy now saves you once per run and restores your planet to full Health. Its revive chance can eventually reach 100%. * Research Lab: You can now run up to 7 researches at once. Research prices and durations have been reworked. * Workshop upgrades, Module upgrades, Game Speed, and World unlocks have new prices. ORBIS, the first world, is now significantly cheaper. * TEMPEST now boosts Base Fire Rate. PRISMA now boosts Super Crit Chance. * Maxed cards are back in card pulls and refund part of their price in Gems. * Milestones now award less Ultimatter, while permanent Ultimate levels cost more Ultimatter. * Everything you already own remains exactly as it is. New prices apply only to future purchases. UI & VISUALS * Tap Cash or Coins during battle to switch the display to income per minute. * A new SCREEN SHAKE ON / OFF option has been added to Advanced Settings. * New space backgrounds for every world in the lobby. OPTIMIZATION & BUG FIXES * Performance in large late-game battles at high game speeds has been optimized. * Up to 1,200 enemies can be on the battlefield at once; new enemies enter as existing ones are defeated. * Knockback now behaves consistently across all game speeds. * Coins, Flux, and wave records from runs that cannot be saved immediately are no longer lost. * Fixed a crash on the Game Over screen for AD-FREE players. * Switching accounts and signing out are now safer. ### 2.0.23 — 2026-09-24 v2.0.23 • Medics can no longer heal bosses endlessly, so tough bosses finally go down • New damage number setting: show every hit, a total per second, or turn them off • Tap Coins, Gems or any currency to see the exact amount • See which wall bricks are holding a boss back and which are taking damage • The Death Ray beam is now easy to see, even at normal speed • New look for mission crates: tap one to see what is inside ### 2.0.22 — 2026-09-22 v2.0.22 • Stay in the fight: short signal drops no longer stop your battle, the game reconnects in the background • Master Balance: enemy health, damage, Coins and Flux retuned, and late waves hit softer • New record waves pay their full Flux, and Game Over shows exactly what you earn • From Tier 4, splash damage hits a whole crowd at full strength • Shots now fly all the way off the screen, piercing the full line on tablets • A clearer Recovery capsule display with a countdown ### 2.0.21 — 2026-09-20 v2.0.21 • Side weapons now spread their fire instead of idling — boss fights end far faster • DEATH RAY reworked: it locks on, burns until the target dies, melts shields and heats up to 3x damage • Railgun rounds bounce, Missile breaks armor, Cryo, Arc Coil and Meteor hit harder • SINGULARITY redrawn as a well that devours light, and it no longer drags enemies into your wall • Battle stats and history now show the Flux and Speed Boost you earned • New app icon, smoother purchases, crash fixes ## Apps similar to Idle Planet Defender | App | Rating | Price | Category | | --- | --- | --- | --- | | [Earth Orbit Defense](https://appshunter.io/ios/app/earth-orbit-defense/id6760950773) | — | Free | Games | | [Whomplings: Battle Arena](https://appshunter.io/ios/app/whomplings-battle-arena/id6808167729) | — | Free | Games | | [Clock Heroes](https://appshunter.io/ios/app/clock-heroes/id6758855161) | — | Free | Games | | [Mikrop Online](https://appshunter.io/ios/app/mikrop-online/id1595303574) | 4.8 (4) | Free | Games | | [Blue Defense: Second Wave!](https://appshunter.io/ios/app/blue-defense-second-wave/id389817492) | 4.3 (20) | Free | Games | | [Royal Cannon Knockout](https://appshunter.io/ios/app/royal-cannon-knockout/id6796202383) | — | Free | Games | --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-07.*