Master chess through legendary games by replaying iconic positions and testing your calculation against the engine
Sports builder game for creating and simulating NFL quarterbacks, wide receivers, and running backs
Stage
Startup
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Founded
2026
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Based in
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Pricing model
Freemium
Free
Pricing
Player plan: $4.99 per month or $50 per year. Yearly billing saves 16% and works out to $4.17 a month. Includes unlimited positions, record and export, 1080p quality, and basic AI analysis. 30-day money-back guarantee.
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Key features
Replay iconic chess positions from legendary games
Test calculation against AI engine
Challenge friends with shareable links
Compare continuation against best engine line
Game recording and export
Basic AI analysis
1080p quality output
Play against engine from any position
Curated library of historic positions
Free position challenges without account
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
Play from the exact moment of legendary games, not just study them
Designed for pausing chess videos to calculate positions
Step into the shoes of chess legends at critical game moments
Compare your moves directly against engine analysis
Built by an indie hacker solving a personal chess problem
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
ReplayChess
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