For me, the ultimate classic football game (unfortunately I only found the highlights), 1982 World Cup semi-final West Germany vs France:
(can only be watched on YT, apparently)
The game just went on and on... And it was an evening game, which also made it more athmospheric. I think the klock was well past midnight at least in Finland when the game finally ended. So much drama; action going back and forth, "Toni" Schumacher's vile act against Patrick Battiston, France leading already by two goals in the OT, but Germany coming back (didn't they always?), and also leading the penalty shootout, but then losing it in the end. Still the best game I've ever seen! (Not probably a very objective view, but there you go.)