[Hippy]

go into the admincp / arcade and click on games..
they list all or by abc's
at the bottom you'll see check all
then there will be options there as well pick delete..

next you'll be prompted to delete just files
or files and the Database..
choose files and DB ..

at the bottom as well you can move the games. but you'll have to check the ones manually use the options at the bottom to move..
hope it helps