A merge game with real physics where you combine balls to create gold
Stage
Not given
Startup
Founded
Not given
2026
Based in
Not given
BG
Pricing model
Freemium
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Pricing
Free: $0. Pro: $9.99/month, $69/year, or $149 lifetime (early-bird for first 100 buyers, then $249). Pro covers up to 100 Coach-explained games and 50 scoresheet photos per month.
Not given
Key features
Accuracy scoring based on winning chances
Move labels: inaccuracy, mistake, blunder
No account required for free review
Import games from Lichess or Chess.com
Coach written explanations in plain language
Scoresheet photo to PGN conversion
Suspected mistakes checked twice at greater depth
Real physics: balls fall with true weight and settle naturally into a glass jar
Eleven ball sizes from Moonstone to Aurum, with five falling and six created by merging
Six original musical pieces where every merge plays a note on beat
Progress tracking with sixty-four stars across four skies
Twenty-two visual sets that transform balls, jar, background and sound
Four game modes: sixty-four stages, Endless, daily challenge, and Zen
Friend codes and competitive weekly tournaments with medals
No ads and no ad SDK; purchases only affect appearance, never gameplay
What makes it different
Honest labeling: mistakes rechecked deeper before labeling
No uploads for free review: analysis runs locally in your browser
Free review never requires account or has daily limits
One-click review for returning users with remembered username
Real physics engine where balls fall and settle naturally instead of snapping
Music integrated into gameplay: every merge plays a note that lands on the beat
No advertisements and no ad SDK in the entire build
Purchases only change appearance and sound, never game balance or outcomes
Permanent progression: every stage completion lights a star forever in the sky
Explain My Chess
AURUM