
No revenue estimate for GOG — its rating/review counts don't calibrate to sales the way Steam's do. Reviews and prices only.
Sharpen your mind with a connect-the-block-style one-line brain training puzzle game. Fill the Rainbow is a fun, simple and beauty relaxing puzzle game with an immersive atmosphere. Your brain becomes more active the more you play. If you think you are an intelligent person, you are in the right place. The more you play the more intelligent you become.
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