Click on different objects and buttons to interact with them. Once you click on the hamster food it should follow your mouse, so you don't need to drag it. In the most recent update, I added a music feature with three songs to choose from. Please wait for the songs to finish before playing another one, otherwise they will overlap. (And trust me, when that happens, it doesn't sound good.)
I just finished this game so it's very small. More updates coming soon! (Improved bookcase, more features, and more hamsters.) Please enjoy!