A hard sci-fi idle game evolving from the Big Bang to an interstellar civilization
Free browser games including puzzles, words, cards, board games and arcade games
Stage
Not given
Not given
Founded
Not given
Not given
Based in
Not given
Not given
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)
Not given
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
Daily Crossword and Sudoku puzzles
24 classic games including Solitaire, Minesweeper, Chess and Checkers
Play as guest with progress saved on device
Account creation to sync progress across devices
Teach me button for logic games explaining next moves
Touch-first design optimized for phones
Available in six languages with localized word lists
Leaderboards with anonymous fun nicknames
No sign-up required to play
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
Independent games site with original implementations of 24 classic games
Games optimized for touch on phones while also working with mouse and keyboard
Available in six languages with real localized content not just translations
Play immediately without download or account creation
Educational Teach me feature explaining moves in logic games
Cosmos Era
GameLake