Progressive blindfold chess training from square recognition to full games
A free browser life simulator where you are born randomly and live one life to its end
Stage
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Founded
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Based in
FR
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Pricing model
Freemium
Free
Pricing
Free: €0 forever with unlimited exercises, games vs AI, and access to levels 1-3. Pro Lifetime: €39 one-time payment for all 7 levels, all 8 AI difficulties, famous games library, endgame training, and intermediate tactics.
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Key features
7 progressive training levels from square colors to full blindfold games
Unlimited exercises and games against AI
Voice-controlled play in 6 languages
Progress tracking and achievement system
Cross-device synchronization
Famous grandmaster games to replay blindfolded
Endgame training module
Multiple board visibility modes
Tactical puzzles and exercises
Play 172 countries with real birth statistics
Life decisions affect outcomes
Realistic mortality and life expectancy data
Gameplay from age 0 to death
Optional text-to-speech narration
Share life summaries and life cards
Play at variable speed or pause
Auto mode to watch without deciding
10 languages including Chinese, Japanese and Vietnamese
Local browser storage, no cloud account required
What makes it different
Systematic progression from fundamentals to blindfold mastery, not just a side effect of puzzle training
Free tier is genuinely free with no dark patterns or engagement manipulation
One-time €39 lifetime payment with no subscription required
Built and maintained by a single indie developer actively improving the product
Available across web, iOS, and Android with unified account
Built on real UN and World Bank data, not randomization
Independent edition separate from the original 1in8b.life project
Covers inequality, illness and mortality at real rates
DarkSquares
1 in 8 Billion