Same idea, three boards
Each live game has one solution. The givens — or the regions — decide it. You do not guess.
Each game adds a third constraint besides rows and columns. Sudoku has 3×3 boxes. Star Battle has regions and the no-touch rule. Binary Puzzle has equal 0s and 1s, no three identical in a line, and lines that must all differ.
Forced moves first. Notes when you need them. Check mistakes when something clashes. The same habit reads all three boards.
The pleasure is the same: the board tells you, and then it is solved. Play Sudoku, Play Star Battle, or Play Binary Puzzle. Home is the menu.