Items are arranged in groups, based on element types, and this helps keep the screen free of clutter from the vast range of things you'll hopefully create. For example, water, steam, swamps and storms are all in the 'Water' group of elements. As you create new classes of items, new groups will be created, such as animals or microbes.
The game is also furnished with an impressive sound track, both during playing and as an intro video. However, there's no way to alter the volume on these so they can become quite overpowering. I did find that the music switched on randomly the first few times I played, but it did behave – eventually.
I'm not sure that this general type of game has a lot of longevity – I enjoy creating some new combinations but it soon bores me. However, if you like this kind of game, then Doodle God is a stand-out title.