Video games aren't always seen as the best medium for storytelling. But I think they should be, for one simple reason: interactivity.
As the player, you're experiencing the story first-hand. Whatever happens to the protagonist of the story is happening to you as a player. How you act and react forms part of the story.
I think interactivity should, in theory, allow people to have a greater connection with the story. But too many games use non-interactive, cinematic sequences to show their most important scenes. At a time when games could hammer home the advantage they have over movies, the player instead puts down the controller to passively watch it unfold without his input.
So it's funny that it took a Swedish filmmaker to make a game that avoids cinematic tricks to tell his story.