Combination of the games Sudoku, Battleship, and Minesweeper. Like Battleship, guess where your enemy battleships are and bomb them. Like Minesweeper you can uncover empty blocks. Like Sudoku, you get numbers to help you determine what is occupied in the covered blocks.
Uncover and sink the battleships on the board. Watch out though, if you uncover one with radar then the computer-oppnonent will retaliate and cost you hit on your battleship. Get hit 3X and it is game over. Loads of FUN! With great mental challenges.
Exercise your mind and have fun, too!