All of the C64 games available at this site can be played using one of the emulator programs available at the links below:-

PC C64 emulators

Win Vice: WinVICE-1.9. version 1.9 by the VICE team.

CCS64: CCS64DOS version 2.0B by Per Håkan Sundell.

CCS64: CCS64_32 version 2.0B by Per Håkan Sundell.