NumberDrop - A uniquely challenging math puzzle game.
HoDoKu - HoDoKu is a sudoku helper written in Java and available in English and German.
Math Master - Brain Quizzes - Math Master is a free math quiz game designed for all ages!
Yasminoku - Sudoku game and solver totally written in DHTML.
2048 - Play 2048 Game Online. Join the numbers and get to the 2048 tile!
Minimal Sudoku - Minimal Sudoku is an easy to use, clutter-free classic sudoku game which is designed for iOS 7.