
I'm 99.999999991% sure the game you speak of is... Mortal Kombat 11.
I'm willing to say that the new decade begins on New Years' Day in a couple of days. I'm well aware that there was no year 0, but back around the year 2000 there was always s couple people around that wanted to be pedantic about things. 2001 just isn't going to have the same impact as 2000, likewise 2020 is more impactful than 2021.
And to be fair, 2010-2019 is a legit ten year span, where I could see the millennium argument make some kind of sense since, technically, only 1,999 years had passed since the year 1 AD as of 1-01-2000. Ugh, this is a bit more thinking than I want to do right now.