Solve placement with 2 rules: each row, column, and region has exactly 2 stars; no stars can touch, including diagonally. Track progress and access from KrazyDad, featured in the New York Times.
Balls into matching tubes by tapping to move them between tubes. Match colors by placing balls on top of the same color or into empty tubes. Complete levels by ly sorting all colors.
Guess the secret code using logic and deduction. Play in 4 modes with 3 difficulty levels. Compete on Game Center leaderboards. Features colorblind and left-handed support. No ads or in- purchases.
