Best expansion/Large DLC ever.

[Kristof81]

4. Pretty much any old Blizzard DLCs, like Lord of destruction, Hellfire, Brood War
3. Red Alert 2 - Yuri's revenge
2. Oblivion - Shivering isles
... and finally [no contest really]
1. both, Witcher 3 - Blood and wine & Hearts of stone