A hard sci-fi idle game evolving from the Big Bang to an interstellar civilization
Free word game tools for word nerds
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
Anagram Generator with support for eight languages
Scrabble Word Finder with NWL23 and Collins CSW24 dictionaries
Information theory-based Wordle Solver
Synonym Finder with parts of speech grouping
Rhyme Finder grouped by syllable count
Crossword Maker with clue suggestions
Word Search Maker with three difficulty levels
Runs entirely in browser with no server processing
Offline functionality with cached dictionaries
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
Fast, mobile-friendly performance with no unnecessary dependencies
No login walls or dark patterns, plain vanilla JavaScript
Information theory optimization for mathematically optimal Wordle moves
Dual Scrabble dictionary support for North American and international play
Cosmos Era
LexiLab