You can load the disk directory using LOAD "$",8 Then type LIST to look at it. You will want to load a file with the PRG extension on the right by LOAD "GAME NAME",8 Then type LIST to view or RUN to run.
The left SHIFT key allows " to be input. The auto load system does not work because it types LOAD " *",8,1 to load the first PRG file instead of LOAD "*",8,1 You can also try this to load the game.