Idle Planet Defender: Space TD

Idle Planet Defender: Space TD

Idle Space Tower Defense

0 ratings
Free
In-App PurchasesWith Ads

Rating summary

Details

Released
September 16, 2026
Updated
October 3, 2026
Idle Planet Defender: Space TD video #1 for iPhone
Idle Planet Defender: Space TD screenshot #2 for iPhone
Idle Planet Defender: Space TD screenshot #3 for iPhone
Idle Planet Defender: Space TD screenshot #4 for iPhone
Idle Planet Defender: Space TD screenshot #5 for iPhone
Idle Planet Defender: Space TD screenshot #6 for iPhone
Idle Planet Defender: Space TD screenshot #7 for iPhone
Idle Planet Defender: Space TD screenshot #8 for iPhone
Idle Planet Defender: Space TD screenshot #9 for iPhone
iphone
ipad
🖼️Get Icon
Icons↘︎

About

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.
Show more

What's New in Idle Planet Defender

2.0.25

October 3, 2026

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.

More
10

Subscriptions & In-App Purchases

$4.19

Research Surge II

Research chain step 2 of 4. Grants Speedups.