When CD Projekt RED gets around to releasing the genuinely sizable story-driven DLC for The Witcher 3: Wild Hunt, they’ll be dropping massive campaigns on their faithful once again. Heart of Stone is set to release later this year, and Blood and Wine will come in 2016.

How big are these games? The devs aren’t promising anything exact quite yet, but they’re estimating that the storylines, combined, will take as long to complete as The Witcher 2: Assassins of Kings‘ quest.

Game Director Konrad Tomaszkiewicz spoke with Game Reactor about the expansions and their length.

“The expansion packs will be whole new storylines with all the elements you’ve got in the main story (like cutscenes, new characters, new items, new Gwent cards) and many, many more. They will be quite long…”

Okay, I’ll bite: how long?

“The first expansion will be around 10 hours and the second expansion will be around 20 hours… and I think it’s possible that they will be bigger, because it’s always like this (that when we plan some time or hours, it’s twice or something like this), but I’m not promising anything right now.

And even now, if you sum up this 10 to 20 hours and you compare it to The Witcher 2, it’s almost the size of The Witcher 2. And it will be cool, it will be new stories, it will be very emotional stories and I think that people will be happy.”

30 hours of expansion content? And Tomaskiewicz thinks that figure could double as development goes on? That’s nuts.

Stay tuned for more on Witcher as it comes.