Game allows users to fill a 9x9 grid divided into 3x3 blocks with numbers 1-9. Players enter numbers in rows and columns without repeating in each block. Features include drag-and- controls, puzzle selection, and brain-training challenges.
Play on a 10x10 grid by placing puzzle to create lines and clear the board. Strategically arrange shapes to remove them. Track high scores and continue playing indefinitely without .
Play piano using a grid-based key layout. Select MIDI voices and adjust scales. Enable sticky keys for practice. Adjust note duration and velocity. Save and load custom configurations.
