Goal of Add It Up is to select numbers that add up to the target sum. You only have a limited amount of time to do so. The more numbers you select to get to the target sum, the higher your score will be. The faster you solve a sum, the higher your score will be.
Sudoku games
Zoobiedoku
Sudoku game: place all animals on the grid. Every animal can be placed only once in every row, column or block.