Planet Defense: Space TD

by CyberJoy Games · Strategy · Free

On Google Play since September 2025 · Data updated 2026-10-17

Google Play

Planet Defense: Space TD is made and published by CyberJoy Games. AppBrain is an independent app data site and isn't affiliated with CyberJoy Games. The app name, icon, screenshots and description belong to CyberJoy Games and are shown as published on Google Play.

AppBrain's verdict

PopularWell rated

Rating on Google Play: 4.21; 12,402 ratings
Installs: 1.6 million
Last updated: September 23, 2026
Ads: Contains ads
Size: 487.8 MB

Planet Defense: Space TD is popular, with 1.6 million installs. Users rate it well: 4.2 stars from 12,402 ratings.

Pros & Cons

Roguelike progression delivers high replay value
Deep strategic options with diverse sentinels and abilities
Easy-to-learn controls with challenging mastery
Free-to-play with regular updates and new content

Branding could foreground space-themed or tower-defense keywords more to improve discoverability
Ad/analytics and location permission requirements may raise privacy considerations for some users
Perceived gap vs. traditional tower-defense branding for players seeking classic TD terminology

User feedback

Ratings and reviews on Google Play

Comments on Planet Defense: Space TD for Android

★★★★☆ Moonlion · Sep 29, 2026

Fun little game, great graphics and upgrades. Make x2 speed available to all instead of behind a pay wall, and it is easy 5 stars.

★★★★★ Charles Chang · Aug 10, 2026

Really fun defense Tower type game. Ads are a pain and the cost to remove it is not good

★★★★★ Terry Brown · Sep 13, 2026

I have played this game and its predecessor for quite a while now and find it quite enjoyable, I had wanted to skip all the ads so purchased the VIP package, which makes the game simply fun without a chore. The only gripe is that the price of the VIP pass was equivalent to that of an AA game produced from a large studio, I think perhaps a more reasonably priced offer would be a VIP pass to a bundle of these devs games to offset the initial outlay, just my economically minded opinion.

★☆☆☆☆ dmk · Aug 26, 2026

Cheaters bugs and borings gameplay with hackers, ads and paywalls for 1 level to progress xd

★★☆☆☆ Bradley Coleman · Aug 19, 2026

Pay to win big time. The game is fun but If you want to get anywhere you better have deep pockets. Even a "special" event need you to pay to get anything worthwhile. Also, weekly event need money! And it's not a 1 off payment oh no! In 4 or 5 days time the even runs again, and you need to pay again! Thanks but no, thanks.

Google Play Rating history and histogram

1.7K

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530

1.1K

Store listing

By CyberJoy Games, from Google Play

“Protect your planet in an epic cosmic battle!”

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Screenshots by CyberJoy Games, from the Google Play listing

Description by CyberJoy Games Written by the developer, not by AppBrain. Click to read.

Embark on an interstellar adventure with Planet Defense, a thrilling roguelike tower defense game! Defend your home planet against relentless waves of alien invaders by building, upgrading, and optimizing your defenses. With easy-to-learn mechanics and deep strategic gameplay, every decision counts in your quest for survival.

Key Features:
Roguelike Progression – Each playthrough is unique, with randomize upgrades and challenges. Adapt your strategy to survive!

Strategic Depth – Unlock and upgrade a variety of powerful sentinel, each with unique abilities. Combine them wisely to fend off increasingly tough foes.

Immersive Experience – Stunning visuals and atmospheric sound design pull you into an epic cosmic battle for survival.

Easy to Learn, Hard to Master – Intuitive controls make it simple to jump in, but mastering the game requires smart planning and quick thinking.

Endless Replayability – Procedurally generated levels and multiple difficulty modes ensure no two battles are the same.

Defend. Upgrade. Survive.
Can you outsmart the alien onslaught and become the ultimate galactic defender? Download now and start your journey!

Age Rating 13 Years Above in IGRS: Game content suitable for ages 13 and above (13+)

Recent changes:
1. Added the new Threat Research Project feature to Trial of Stellar.
2. Added a preview option to the Random Skin Chest item icon.
3. Fixed several leaderboard display issues in Galaxy Arena.

Official page on Google Play Also on the App Store

Safety and technology

Found in the app by AppBrain

Ads: Contains ads
Price: Free
Libraries: 65
App size: 487.8 MB
Content rating: Everyone

Technologies used by Planet Defense: Space TD

23 permissions · 65 libraries

Subscribe to see full permission and library details

Releases

Updates seen on Google Play

Version: 0.1.79
Launched: September 2025

Sep 23, 2026UpdateVersion 0.1.79
Sep 17, 2026UpdateVersion 0.1.78
Sep 10, 2026UpdateVersion 0.1.77
Sep 3, 2026UpdateVersion 0.1.76
Aug 28, 2026UpdateVersion 0.1.75

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Alternatives

Similar apps and more from CyberJoy Games

Alternatives to Planet Defense: Space TD

Also available on the App Store

Planet Defense: Space TD game

CYBERJOY LIMITED

4.6

Free

2.8K ratings

Installs

Tracked by AppBrain

Last 30 days: 63 thousand
Per day: 2.1 thousand; 30-day average
Play install range: 1+ million
Launched: September 2025

Installs over time

Planet Defense: Space TD has been installed 1.6 million times. Over the past 30 days, it averaged 2.1 thousand installs per day.

Rankings

Google Play top charts

Highest rank: #107
Chart: Top Free; Strategy
Country: Czech Republic

Google Play Rankings for Planet Defense: Space TD

Top rankings

Rank	Country	Category	List
155	United States	Strategy	Top Free
154	Japan	Strategy	Top Free
160	France	Strategy	Top Free
164	Canada	Strategy	Top Free
175	Germany	Strategy	Top Free
107	Czech Republic	Strategy	Top Free
120	United States	Strategy	Top Grossing
127	South Korea	Strategy	Top Free
140	Australia	Strategy	Top Free
151	Netherlands	Strategy	Top Free

Show all market rankings

Ranking history in United States

About the app and developer

About Planet Defense: Space TD

Planet Defense: Space TD is a strategy app developed by CyberJoy Games.

Install Statistics

Planet Defense: Space TD has been installed 1.6 million times. In the last 30 days, the app was installed 63 thousand times.

User Ratings

Planet Defense: Space TD is rated 4.21 out of 5 stars. The rating is based on 12 thousand ratings.

App Information

Planet Defense: Space TD is freely available from Google Play. The app size is 487.81 MB. The latest version available is 0.1.79. The last update was on September 23, 2026.

Technical Requirements

The app has a content rating of Everyone. The app has been available on Google Play since September 2025.

App Performance Report

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Developer information for CyberJoy Games

CyberJoy Games

planetdefense@cyberjoygame.com

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