For technical details about the Commodore 64, and emulation, I have a seperate page in the Virtual Computer Museum. This is just a list of games that were released first or only on this platform. There is also a Commodore 64 screenshot gallery.
The Commodore 64 is certainly one of the most important game platforms, not only of the 80s, but in general. Unlike the Apple ][, it rarely gave birth to anything lasting. No new genre was concieved on the Commodore 64, no game series spanning decades had its start here. But nearly every game in the 80s, if it was ported at all, was ported to it, and that goes for US as well as European games. The Apple ][ was nearly exclusively a US, the Amiga mainly a European platform, but the Commodore 64 was popular on both sides of the Atlantic.
And more than any other platform, the Commodore 64 had an enthusiast programming community that stayed active well into the second half of the 90s, and in part is still active now. 64k had proved enough for a lot of people.