Life & fun · alternatives · 2026
24 alternatives to Solar Idle
A free, idol space game where you colonise a solar system
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Solar Idle launched in 2020; newer entries below may have overtaken it.
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Race The Sun▲77You are a solar craft. The sun is your death timer
2015 · apps.apple.com · its alternatives →
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I built this with Claude cause I always wanted to tinker with a simulation economoy and I love space themes. A space-economy sim where nothing is scripted. A few hundred autonomous ships each run their own planner. Some chase the best trade route, take a delivery contract, refuel, retrofit at a shipyard, or dock so the crew can rest before morale tanks. Markets price everything off supply with shortage-urgency multipliers, factions tax and subsidize, populations migrate when they're unhappy, and stations that go broke get abandoned and rot. It started as an Elixir/Phoenix prototype, but…
Jul 2026 · github.com · its alternatives →
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Idle Armies▲58An idle game like no other; a great clash of good and evil
2016 · apps.apple.com · its alternatives →
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Freeciv is a Free and Open Source empire-building strategy game inspired by the history of human civilization. The game commences in prehistory and your mission is to lead your tribe from the Stone Age to the Space Age.
2014 · play.freeciv.org · its alternatives →
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SOLAR by Aireal ▲88Walk among the planets via geospatial augmented reality
2016 · aireal.io · its alternatives →
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You are on your own with zombies on small isolated planets
2016 · apps.apple.com · its alternatives →
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2016 · play.freeciv.org · its alternatives →
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Astroneer▲98A game of aerospace industry and interplanetary exploration
2015 · astroneer.space · its alternatives →
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Kill your time with a challenging and simple gameplay
2021 · play.google.com · its alternatives →
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Out There▲91A simple, atmospheric FTL-like space survival game
2015 · outtheregame.com · its alternatives →
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I didn't realize Universe Sandbox ran on MacOS, and I was in the mood to play around a bit. Some functions it's got: - Random system generation - Sonification is super fun too - Habitability Simulation (Just for fun, don't cite this please) - Replacing, spawning, deleting objects I've had tons of fun building this, so I hope someone else can share the joy. It's free and runs in the browser. I'd love to hear any feedback. I think this is at a state where I might leave it as it is, but if people are interested in other features, maybe I'll keep working on it. I've kept saying I'll stop working…
Dec 2025 · luna.watermelonson.com · its alternatives →
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Find another habitable planet and rebuild your nation
2015 · apps.apple.com · its alternatives →
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Mosaic▲75Crowdfund solar energy projects, get a profit as an investor
2014 · solarservicingllc.com · its alternatives →
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Build a solar system that doesn't blow up from gravity
2016 · stefanom.org · its alternatives →
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Playing cards based on solar system, science & exploration
2021 · kickstarter.com · its alternatives →
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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →