A hard sci-fi idle game evolving from the Big Bang to an interstellar civilization
Stage
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Founded
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Based in
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Pricing model
Freemium
Freemium
Pricing
Free to make and play games within a small daily allowance. Subscriptions cost $4.99 a month or $29.99 a year.
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)
Key features
Creates game designs from personal details using AI models
Generates game art automatically
Builds complete playable games in about a minute
Works on keyboard or touchscreen
No account required to play
Available through AI assistants via MCP or HTTP API
Games run in isolated frames without network access
Optional sign-in with email codes
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
What makes it different
Turns inside jokes and personal habits directly into game mechanics
Games are generated in about a minute from just two or three details
Integrates with AI assistants for game creation
Completely free to make and play within daily allowance
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
Playable Gift
Cosmos Era