What is the name of the operative system with the square buttons and the hands?

i remember around the time windows 3.1 was released, i didn't have it yet and and i had this os on my new machine, big square buttons with the app's icons in the middle, and the cursor has a hand, and you could choose between skinny hand, fat hand, white hand and black hand, scrolling horizontally and vertically. i think it didn't use the mouse, so you had to move with the keyboard arrows and press enter to run the application.