A hard sci-fi idle game evolving from the Big Bang to an interstellar civilization
Free cognitive tests to measure and improve your mental abilities
Stage
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Founded
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Based in
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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
Reaction Time Test - measure response to visual stimuli
Visual processing tests including Visual Memory, Symbol Search, and Color Blindness
Score tracking and comparison to other users
Leaderboard functionality
Aim Trainer test
Color Hue Test for color distinction
FPS Reaction training including Gridshot, Flick, and Tracking
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
No signup required - tests available immediately without account creation
Tests based on established research protocols rather than casual games
Scores stored locally in browser with no personal data tracking or sale
Accessible cognitive testing without requiring lab or academic credentials
Cosmos Era
Human Benchmark