Free curated hub of HTML5 browser games with brainrot characters
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
Free
Freemium
Pricing
Not given
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
106 games across 10 categories
Escape and survival games
Puzzle and merge games
Rhythm and action games
Checked desktop control observations
Device compatibility notes
Recently played tracking
Game search and filtering
No account or download required
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
Editorial guidance distinguishing game versions and comparing controls between different versions of the same character
Verified observations of opening gameplay rather than unverified feature claims
Character field guide explaining recurring meme characters across different games
Explains which features were checked and which remain unverified for each game
Updated availability status when games stop working with alternatives suggested
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
Brainrot Gaming
Cosmos Era