A free daily rhyming word game where players find words that rhyme with the word of the day
A hard sci-fi idle game evolving from the Big Bang to an interstellar civilization
Stage
Not given
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Founded
2023
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Based in
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Pricing model
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Freemium
Pricing
Free to play
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
Find 7 words that rhyme with the daily word
Phonetic matching based on sound, not spelling
Longer words earn higher scores
Daily leaderboards
Streak tracking
Shareable results
Works on any device
No account 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
Rewards vocabulary with higher scores for longer words and multi-syllable answers
Built as a birthday gift that grew into a daily game for thousands
Like Wordle but for rhymes with phonetic matching
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
Freestyle
Cosmos Era