Doodle Alchemy is a new version of the classic game of the same name. (Actually, there are many games with this name for all kinds of platforms.) In Doodle Alchemy, you create lots of different elements from combining just four: earth, air, fire, and water.
The gameplay is simple: select two elements to create a third. Earth and fire, for example, would make lava. You can create hundreds of different elements in this way, from atom bombs to skyscrapers or even robots. Of course, these elements are complicated and can only be created after you've created more basic elements first.
There are some more bizarre elements, too, such as the philosopher's stone, poisoned weapons, or cities. Again, before you can create any of these, you'll need other elements such as iron, aluminum, and so on.
Doodle Alchemy is a fun puzzle game that has decent visuals and a soothing soundtrack. It's a fun game to play for a while without worrying too much.