Mult puzzle (mpuz in short) is a puzzle game based on multiplication. mpuz was originally released for the emacs editor. This is its port to iPhone\iPod Touch. The port was developed by the seller from scratch.
Mult puzzle's rules are simple. Each alphabetical letter (A-Z) represents a number (0-9). You are asked to guess a mapping between the letters and the numbers according to the calculation shown an upper part of the screen.
You can check whether your guess is correct or not as follows. First, please tap a letter in the upper part of the screen and tap a number in the lower part of the screen. Then, an equation will be shown in the button at the center. (e.g., J=0 as shown in the screenshot, if you tap J and 0.) Finally, you can confirm your guess by tapping the button showing the equation.
You can get a hint by tapping the "Hint" button. You can also give up a game by tapping the "Giveup" button.
The screenshot seems pretty simple, but buttons funnily rotate, tremble and laugh as you play this game.