Cloanto has made a nice transfer utility, called AmigaExplorer, with which you can transfer your disks to adf's (or vice versa, or files as is), using a serial cable between Amiga and PC.
You could also have a look at the Catweasel controller. You can connect floppy drives to it (even a 8" floppy disk drive)
and read/write in many formats, Commodore, Amiga, Mac, you name it.
But AFAIK it only works on Linux. (I dunno, maybe they have nowadays Windows drivers/app, haven't checked for years now)
For games on the internet you can check if Back to the Roots (BTTR) is online again.
Also, Aminet would also be a good option to look for freeware games. And AFAIK AmigaLand.de is a legal site
