Progressive blindfold chess training from square recognition to full games
Sports builder game for creating and simulating NFL quarterbacks, wide receivers, and running backs
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
Build quarterbacks, wide receivers, or running backs from current NFL stars and all-time legends
Nine-trait selection system with body map visualization
Position-specific trait boards for each player type
Classic mode with current NFL players
All-Time mode featuring legendary players
Deterministic simulation for reproducible results
Shareable result pages with encoded picks and seed
No account required, local browser storage for game progress
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
Independent fan-made project with original ratings not copied from official leagues or commercial games
Deterministic simulation enables reproducible results and same-board challenges with friends
Complete fictional season simulation rather than stopping at cosmetic ratings
Strategy-focused gameplay with meaningful opportunity cost for each decision
Position-specific builds requiring different strategic approaches
DarkSquares
Build A Player