Best Planet Builder Apps & Games

250+ iOS apps & games curated and reviewed

4.3 avg rating
19 free apps & games
Updated September 2026

TerraGenesis is the household name in planet builder, but it's far from the only option. We track 250+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Compare top Planet Builder Apps & Games (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1TerraGenesis - Space SettlersTerraGenesis - Space SettlersFree4.6★ (33K)YesYesSep 2026
2Idle World - Planet MinerIdle World - Planet MinerFree4.5★ (34K)YesYesSep 2026
3Solar System SimSolar System SimFree4.5★ (4.1K)YesYesSep 2026
4Worldseed: Planet TycoonWorldseed: Planet TycoonFree—NoNoAug 2026
5Planet Builder: Idle EvolutionPlanet Builder: Idle EvolutionFree5.0★ (5)YesYesJul 2026
6TerraGenesis: LandfallTerraGenesis: LandfallFree4.1★ (2K)YesYesSep 2026
7Planet Builder: Space TycoonPlanet Builder: Space TycoonFree5.0★ (1)YesNoAug 2026
8Planet Bomber!Planet Bomber!Free4.5★ (44K)NoYesSep 2026

Top Picks for Planet Builder

TerraGenesis - Space Settlers#1

TerraGenesis - Space Settlers by Tilting Point LLC

Terraform Universe Planets
Editor's Choice
🎮 Games
4.6😊(33K ratings)
FreeAdsIn-App Purchases
TerraGenesis - Space Settlers screenshot 1
TerraGenesis - Space Settlers screenshot 2
TerraGenesis - Space Settlers screenshot 3
TerraGenesis - Space Settlers screenshot 4
TerraGenesis - Space Settlers screenshot 5
TerraGenesis - Space Settlers screenshot 6

Simulate the terraforming of planets using real scientific principles. Cultivate life, manage resources, and build civilizations on various worlds, from our solar system to fictional planets and moons. Encounter alien life and defend your settlements from cosmic threats.

What We Love

  • 🚀 Awesome and engaging
  • 👍 Perfectly engaging game
  • 👍 Incredibly addictive in a good way
  • 👍 Beautiful and pleasing graphics
  • 👍 Realistic and based on science
  • 👍 Satisfying to see planet change
  • 👍 Challenging but not too difficult
  • 👍 Generous with free content
  • 👍 Unobtrusive ads with rewards

Room to Improve

  • 🐛 Biosphere bugs
  • 🐛 Crashes and performance issues
  • 🐛 Terraforming progress resets unexpectedly
  • ⏱️ Terraforming takes too long
  • 💰 Expensive to unlock all content
Idle World - Planet Miner#2

Idle World - Planet Miner by funcell Games Pvt Ltd

My Little Planet Earth Craft!
Strong Contender
🎮 Games
4.5😊(34K ratings)
FreeAdsIn-App Purchases
Idle World - Planet Miner screenshot 1
Idle World - Planet Miner screenshot 2
Idle World - Planet Miner screenshot 3
Idle World - Planet Miner screenshot 4
Idle World - Planet Miner screenshot 5
Idle World - Planet Miner screenshot 6

Build and expand your own planet from the ground up in this addictive idle clicker game. Upgrade your world to generate energy, colonize new areas, and introduce life. Can you unlock the atmosphere and create a thriving planet?

What We Love

  • 🚀 Addictive gameplay
  • 👍 Relaxing and enjoyable
  • 💡 Interesting facts and quotes
  • 🚀 Fast progression early on

Room to Improve

  • 🐛 Bugs and glitches after updates
  • 🔋 High battery consumption
  • 💰 Excessive ads and monetization
  • 🕰️ Slow progression later on
Solar System Sim#3

Solar System Sim by WPC

Space & Planet Physics Sandbox
Worth Considering
🎮 Games
4.5😊(4.1K ratings)
FreeAdsIn-App Purchases
Solar System Sim screenshot 1
Solar System Sim screenshot 2
Solar System Sim screenshot 3
Solar System Sim screenshot 4
Solar System Sim screenshot 5
Solar System Sim screenshot 6

Simulate and explore celestial bodies within our solar system and beyond. Create your own solar systems, experiment with gravity and physics, and observe orbital mechanics in action.

What We Love

  • 🚀 Realistic simulation
  • 🚀 Detailed solar system
  • 🚀 Ability to create custom solar systems
  • 🚀 Impressive graphics
  • 🚀 Frequent updates

Room to Improve

  • 🐛 Crashes and glitches
  • 🔋 High battery consumption
  • 💰 Excessive ads
  • 🐛 Saving and loading issues
  • 🐛 Unstable orbits

More Planet Builder apps to explore

FAQ about Planet Builder

What are the best planet builder apps & games for iPhone?
TerraGenesis - Space Settlers tops our planet builder apps & games ranking as of September 2026, with a 4.6-star average from 33K App Store ratings, and it's free to download.
Yes — 19 of the top planet builder apps & games we rank are free to download, including TerraGenesis - Space Settlers and Idle World - Planet Miner.
TerraGenesis - Space Settlers shows ads and offers in-app purchases, according to its App Store listing as of September 2026.
We track 250+ planet builder apps & games on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
TerraGenesis is an idle planet building simulator that allows players to terraform and settle planets using real scientific principles. You can cultivate life, manage resources, and build civilizations on various celestial bodies.
Key features include building entire worlds by managing resources like air pressure and oxygen, discovering and terraforming planets and moons from our solar system and beyond, creating unique organisms with a biosphere simulator, encountering alien populations, and defending your planet from asteroid attacks.

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