A hard sci-fi idle game evolving from the Big Bang to an interstellar civilization
Real estate tycoon game for iPhone
Stage
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Founded
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Based in
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DE
Pricing model
Freemium
Free
Pricing
Free with no ads; optional Supporter: $2.99/mo, $19.99/yr, or $29.99 lifetime; time crystal packs: $1.99 (Skip a night), $4.99 (Skip a wall), $9.99 (Skip a week)
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Key features
13.8 billion year cosmic timeline from Big Bang to interstellar civilization
118 sourced research cards with scientific citations
12 game eras spanning Cosmos, Life and Civilization
16 different endings
12 civilization channels inspired by science fiction and real concepts
Playable on phone, desktop and iPad with cloud save sync
Installable on phone home screen for offline play
No ads and completely free to play
1,400+ nodes each grounded in real science with sources
Physics-accurate simulation where 1 light-year equals 1 real hour
Buy real landmarks across 22 world cities
Collect rent on a timer from owned properties
Upgrade properties with three tiers: Silver, Gold, Platinum
Earn 20% more rent by completing an entire city
TimeBoost accelerator to collect rent instantly
Office Team to collect all city rent in bulk
CityCollect to sweep rent across entire empire at once
Haptic feedback on collect, purchase and level-up actions
Rent continues to accrue when game is closed
Animated capital counting and level-up celebrations
What makes it different
Every scientific claim cites real sources with year, researcher and publication
Hard sci-fi design where physics and signal times follow real scientific laws
Completely free with no ads, payment optional and never pay-to-win
Invented game lore clearly separated and labeled apart from real science basis
Curated collection of 24+ open-source astronomy, physics and biology projects
Real landmarks in famous world cities instead of fictional properties
Passive income system with rent continuing while game is closed
City completion bonuses provide permanent 20% rent increase stacking with upgrades
Cosmos Era
Estate Inc.