Planet Defense vs Orbital Zero
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Planet Defense
Defend your home planet in this roguelike tower defense game. Build and upgrade defenses to fend off alien invaders with strategic gameplay and unique upgrades each playthrough. Master the art of survival in an epic cosmic battle.
- Roguelike progression with randomized upgrades
- Strategic depth with unlockable sentinels
- Immersive visuals and sound design
- Easy to learn, hard to master gameplay
- Endless replayability with procedural generation
- Multiple difficulty modes
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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+)
Orbital Zero
Control a gravity-powered saucer, tapping to navigate through space. Avoid obstacles, collect power-ups, and complete missions. Unlock new ships and customize your experience as the challenge increases.
- Gravity-powered saucer control
- Tap-to-sling gameplay
- Meteor avoidance
- Crystal and bonus collection
- Unlockable ships with abilities
- Missions across space sectors
- Progressive difficulty
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Take control of a gravity-powered saucer and test your timing in Orbital Zero. Tap to sling your ship toward the landing target while avoiding meteors and collecting crystals, shields, and bonuses. Each run becomes progressively faster, challenging you to survive longer and improve your score. FEATURES • Simple tap controls • Missions across multiple space sectors • Daily challenges and crystal rewards • Unlockable ships with unique abilities • Custom trails and space backgrounds • Progressive difficulty • High-score tracking • Optional in-app purchases Master your timing, unlock new equipment, and see how far you can travel.
Screenshots
Verdict
The clearest difference is rating: Orbital Zero at 5.0 against Planet Defense's 4.6. Orbital Zero also leads on update cadence (every 3 days vs weekly). Planet Defense's advantage is ratings volume (2.9K vs 4) and chart position (#164 vs unranked). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Planet Defense sells 10 one-off in-app purchases and Orbital Zero sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Orbital Zero holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Planet Defense has 2.9K ratings behind it against 4, so its average is the more settled of the two.
Planet Defense ships an update weekly, Orbital Zero every 3 days. The most recent releases landed on November 8, 2026 and October 31, 2026 respectively.
| Parameter | Planet Defense | Orbital Zero |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (2.9K ratings) | 5.0 (4 ratings) — better |
| Positive reviews | 28.5% of reviews | — |
| Number of ratings | 2.9K — better | 4 |
| Update frequency | Weekly | Every 3 days — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | #164 — better | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 646 MB | 19 MB |
| Age rating | 12+ | 4+ |
| Developer | CYBERJOY LIMITED | Brusa |
Customer experience
Planet Defense
Orbital Zero
Bugs and requests
Planet Defense
Reported bugs
2 issues- Inconsistent level completion rewards
- Weapons becoming weaker after upgrades
Requested features
3 requests- Faster progression and upgrades
- More free-to-play friendly monetization
- Improved stability and reduced crashes
Orbital Zero
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Planet Defense
- StarterPack_1$2.99
- LevelPack_1$4.99
- Normal Battlepass$4.99
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- Delux Monthly Card$9.99
- 680 Diamond$9.99
- StarterPack_2$9.99
- Journey Pass - Conqueror Pass$9.99
- Medal Event Boost$14.99
- 1400 Diamond$19.99
- Delux LifeTime Card$49.99
Orbital Zero
- Crystal Pack 60$0.99
- Remove Ads$1.99
- Crystal Pack 250$3.99
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- Crystal Pack 700$8.99
Questions
Is Planet Defense free?
Is Orbital Zero free?
Which has better reviews, Planet Defense or Orbital Zero?
Do Planet Defense or Orbital Zero have ads?
Which is updated more often, Planet Defense or Orbital Zero?
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