While searching i came across a site that has games and more for the VMU, one of the interesting things on this site is called VMos, heres a little about it:
A program menu system,that lets you select a file to run or display as text. Select ‘file’ from the start menu,and you can select a file to start in VMos. While in the file menu,press mode once to use the page menu,and again to return to the start screen.the page menu lets you change directory pages with the left/right buttons. Select ‘strt’ from the start menu to start or display a previously selected game,
or text file.