Gamers' Anniversary

Which game we have played most ever ?  Every gamers have straight answers, yet it might be impossible to resort to any particular franchise, in wide variety genres, from all age groups.

  

10th anniversaries being celebrated by "Transformers: Devastation", "Call of Duty: Black Ops III", "HALO 5: Guardians", and "STAR WARS: Battlefront", they're just in this year, 2025.

We all thought of "Monster Hunter" 20th, but furthermore, even 30th commemorated by "TEKKEN 2".  After all, 45 years ago "PAC-MAN" hit arcades first, in 1980 !