Comparison

Earth2037 vs Mars Defence

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Earth2037

Engage in an online sci-fi strategy game where you build a city, research technology, and command an army. Choose a faction, recruit heroes, and explore a shared world map. Cooperate with alliances to conquer challenges.

Highlights
  • Faction selection
  • City development
  • Hero recruitment
  • Army command
  • World map exploration
  • Alliance cooperation
  • Multi-language support
Features
Read full description

Earth2037 (Earth 2037) is an online sci-fi strategy game. Build your city, recruit heroes, research technology and command an army on a shared world map. CHOOSE YOUR FACTION Join Human Alliance, Rising Sun Kingdom or Hawk Horde. Each faction has its own units and visual style. DEVELOP YOUR CITY Construct and upgrade buildings, manage resources, research technologies and prepare your city for the challenges ahead. RECRUIT HEROES AND COMMAND TROOPS Recruit heroes, develop their equipment and skills, and assemble troops for exploration, defense and battle. EXPLORE AND COOPERATE Explore the world map, gather resources and join an alliance. Coordinate with other commanders, help your allies and plan your next move. PLAY IN YOUR LANGUAGE Choose from 12 interface languages in the game settings. Follow the guided introduction and build your strategy step by step. An internet connection is required. Earth2037 is free to download and offers optional in-app purchases.

About

Mars Defence

Defend Mars from alien invaders in this tower defense strategy game. Build and upgrade defensive towers, manage robots for resource gathering, and develop technologies to survive waves of enemies and complete the Martian campaign.

Highlights
  • 25 days of survival campaign
  • 5 tower types
  • Robot management for resource gathering
  • Economic strategy with resource mining
  • 8 enemy types
  • Tower and technology upgrade system
  • Persistent progress across missions
Read full description

Defend Mars from alien invasion! In this thrilling tower defense strategy game, you become humanity's last hope on the red planet. Aliens are attacking your farm, and only you can stop them! KEY FEATURES: 25 days of survival - complete the full Mars campaign 5 tower types - from classic turrets to dark matter towers Robot management - assign robots to resource gathering Economic strategy - mine stone, iron, and biofuel 8 enemy types - from fast Zippets to powerful Gorvans Upgrade system - develop towers and technologies Persistent progress - upgrades carry over between missions GAMEPLAY: Build defensive towers, manage mining robots, and protect your dome from waves of alien invaders. Each day brings new challenges and opportunities for growth. STRATEGY: Plan tower placement for maximum efficiency Manage colony resources and economy Study enemies and adapt your tactics Develop technologies to strengthen your defense

Screenshots

Earth20374 screens
Mars Defence4 screens

Verdict

The call

The clearest difference is in-app purchases: Mars Defence at none against Earth2037's 6. Earth2037's advantage is ads (none vs shown) and ratings volume (4 vs 1). On price, rating, update cadence and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Earth2037 sells 6 one-off in-app purchases. Mars Defence asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Earth2037 against 5.0 for Mars Defence. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 4 days. The most recent releases landed on November 2, 2026 and October 28, 2026 respectively.

Scorecard4 real differences · 6 level
Earth2037 versus Mars Defence: the parameters behind the verdict, then further details
ParameterEarth2037Mars Defence
PriceFreeFree
Rating5.0 (4 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews—
Number of ratings4 — better1
Update frequencyEvery 4 daysEvery 4 days
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, iPod
Requires iOS15.0 — better16
Further details — not scored
Size617 MB227 MB
Age rating17+12+
DeveloperFei WangMaxim Ivanov

In-app purchases

6 purchases

Earth2037

One-time6
  • 10 Golds$0.99
  • 30 Golds$2.99
  • 90 Golds$7.99
Show 3 more
  • 300 Golds$24.99
  • 700 Golds$49.99
  • 1800 Golds$99.99
None

Mars Defence

No in-app purchases

Questions

Is Earth2037 free?
Earth2037 is free to download, with in-app purchases available.
Is Mars Defence free?
Mars Defence is free to download, with no in-app purchases.
Which has better reviews, Earth2037 or Mars Defence?
Earth2037 and Mars Defence are both rated 5.0 out of 5 on the App Store, from 4 and 1 ratings respectively.
Do Earth2037 or Mars Defence have ads?
Mars Defence shows ads; Earth2037 does not.
Which is updated more often, Earth2037 or Mars Defence?
Earth2037 ships an update every 4 days, and Mars Defence every 4 days. Most recently, Earth2037 was updated on November 2, 2026 and Mars Defence on October 28, 2026.

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