Sky Theory vs Mars Defender
Price, ratings, monetisation and update history for both games, side by side โ with what reviewers say about each.
Sky Theory
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Created with the Infinite Runner Engine by More Mountains, Sky Theory is an incredible endless runner (well, flyer) in which you need to fly always faster, always further.
Mars Defender
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Defend Mars in a fast arcade space shooter built for instant action. Asteroids are falling. Bosses are approaching. Deadly ice obstacles block your path. Take control of your ship, destroy the incoming threat, collect upgrades, and keep Mars alive for as long as you can. Tutorial toasts guide you during the first battles, so you quickly understand what to do: move your ship, destroy asteroids, collect gold and XP, use shields, charge your ultimate weapon, dodge ice, and survive each wave. CLASSIC MODE Fight through 100 tuned levels with rising enemy HP, speed, pressure, boss behavior, and difficulty. Destroy small, medium, large, and gold asteroids, collect XP and gold, unlock stronger ships, and improve your firepower as the challenge grows. SURVIVAL MODE Enter an endless run where every second matters. Destroy enemies in the center combat lane, break upgrade shells to gain new ships and buffs, and collect ammo gates to charge your ultimate weapon. Each run starts from MK1. Survive long enough, upgrade to MK5, and push your score higher. 5 SHIPS TO MASTER Progress from MK1 to MK5 and feel your firepower grow with every upgrade. Each ship has more barrels, a stronger combat role, and its own ultimate weapon: โข MK1: one barrel and a laser beam ultimate โข MK2: two barrels and a bomb ultimate โข MK3: three barrels and a stronger laser ultimate โข MK4: four barrels and a giant bomb ultimate with increased explosion radius โข MK5: five barrels and the most powerful laser ultimate Laser ultimates become much more destructive as you progress from MK1 to MK3 and finally to MK5. Bomb ultimates also evolve, with MK4 delivering a larger explosion radius for massive battlefield clearing. View your ships with a stylish 3D rotation effect in the upgrade screen. POWER-UPS AND ULTIMATES Collect shields, regeneration, damage boosts, shot multipliers, ammo gates, and other combat bonuses. Use laser and bomb ultimates at the right moment to clear the battlefield. In Survival mode, special bomb runes can add extra explosive power during long runs. BOSSES, OBSTACLES, AND LEADERBOARDS Dodge unkillable ice, destroy gold asteroids for valuable rewards, defeat Armageddon-style bosses, and compete for your best Survival score on the Game Center leaderboard. Mars is under attack. Upgrade your ship, master the chaos, and become the defender of the red planet.
Screenshots
Verdict
The clearest difference is in-app purchases: Sky Theory at none against Mars Defender's 5. Sky Theory also leads on ads (none vs shown) and iOS requirement (7.0 vs 15.0). On price and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Mars Defender sells 5 one-off in-app purchases. Sky Theory asks for nothing beyond the download.
| Parameter | Sky Theory | Mars Defender |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 21 months | โ |
| Ads | No โ better | Yes |
| In-app purchases | No โ better | Yes |
| Devices | iPhone, iPod | iPhone, iPad, iPod โ better |
| Requires iOS | 7.0 โ better | 15.0 |
| Further details โ not scored | ||
| Size | 265 MB | 82 MB |
| Age rating | 9+ | 9+ |
| Developer | More Mountains | Valentina Prossapchuk |
In-app purchases
Sky Theory
No in-app purchases
Mars Defender
- Small Gold Pack$0.99
- Medium Gold Pack$1.99
- Remove ads$2.99
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- Starter Pack$3.99
- Large Gold Pack$4.99
Questions
Is Sky Theory free?
Is Mars Defender free?
Do Sky Theory or Mars Defender have ads?
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