Golden week 1997.
Some of you kids might be too young to remember, but back in the 90s the internet wasn't quite as widespread as its today, due to that not all organizations had websites, such was the case with Famitsu, back then the top 30 was released with the weekly magazine, however on large holidays like golden week, obon, new years, etc. They would skip a week due to the holidays and so when the newest issue released they would just combine data of the two weeks that had passed, such is the case this time.
I just divided the number by 2, except for Star Fox and that Gundam game because they released on the second week, this golden week was particularly long too, 11 days, not even all of it is included here.
The Pokeymans are near 1.7m (that's just Red and Green, Blue isn't included on the weekly) best selling game of the year so far is Final Fantasy VII, over 3 million already, it became the best selling game of the series in just 3 weeks and its having some very good legs.