If you mean demos as in game demos then there arent any but if your referring to IE....Red sector....type of thing like Jesus on E's demos then yes there is a dir on all the workbenchs that contains an A to Z of the very best !!!!
BTW.....Tha Assassins collection is freeware and sharware games....each adf has a nice menu and usually 4 games...most crap but some arent bad !!!
But its a good collection to have all the same...Highly collectable
The reason for this idea is simple...IE....If i have turrican that runs from the workbench on the XBOX why have it again in the XBOX's amigadisks dir or repeat any of the others for that matter.
Its different from the menu on the PC as its quick launch and looks REALLY COOL !!!!!