What is 4-Color Puzzle Simulator?
4-Color Puzzle Simulator is a focused training app for falling-block puzzle players who want to build stronger chains. Its built-in AI suggests the next move as a ghost piece while you practice classic foundations like GTR, FRON stacking, and Sub-GTR. With endless practice, chain animation, and a fast custom C++ engine, it helps beginners learn placement and advanced players sharpen big-chain accuracy anywhere.
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