Built-in game editors
Motherhamster can be used simply as an opengl-accelerated wrapper around pygame, but to get the full advantage of motherhamster, you will want to learn about assets. Motherhamster assets are python objects that have members which can be edited at run-time in a graphical editor, and which can be saved and loaded to files. Learning to create assets makes it easier to create a built-in game editor to manage your game's data.
Read the Documentation to get started.