Planet Gravity vs Zombie Sudoku

Planet Gravity isn't just about gravity anymore. Select a planet to get a scrolling fact about that planet on the display. This app is a twist on the Newton’s cradle balance balls. The pendulum balls collide just like the real set and you can select other planets to use that planet’s gravity. How does the pendulum swing with different gravity? Even the Sun has gravity - see what it does to the motion of the pendulums (well they'd probably melt but you get the idea.....)

Play Sudoku for free. But instead of numbers, use the undead. In Sudoku, numbers are arbitrary—there's no adding, subtracting, etc. So why not flex some logographical muscles. And why not zombies. There are nine zombies: one for each number in a typical 9x9 Sudoku game. The challenge is to step away from numerical logic and exercise visual thinking. There are four levels of difficultly, hints are available, and numbers can be activated. But the only score is time, and the only competition is you.