How to intall custom marbles?

Hello, I was just wondering how to install custom marbles into the latest MBP update? The one I downloaded is an .exe file, so how do you install things into that? For example, the Spongebob marble. I just want to roll Spongebob around.

Hey Zemroff,
To install custom content, you need to locate the actual install of MBP on your computer. By default on Windows, it should be in App Data/Roaming/Marble Blast Platinum. To find that, you need to run (windows + R) %APPDATA% , and navigate to MBP from there.
Custom marbles are installed similar to custom levels, except that they go in data/custom_marbles. There should be an instructions file there, but let me know if you need any more help on the subject.