Yeah. You loaded them from either a 5.25" floppy disk or a cassette tape, which was essentially the same as a standard audio cassette. There were cartridges released towards the end of the C64's life but I never had any.
You could either play with the keyboard or a joystick, the latter of which used the same connector as a Sega Mega Drive/Genesis so the controllers are pretty much interchangeable. There was a mouse available too although mine never seemed to work.![]()