In Sweden, it's been a growing thing for some years. When I grew up (70s-80s), there was no Halloween at all. We went around dressed up at witches for Easter instead (no tricking though, only Easter well wishes in the form of drawings of chickens, eggs and rabbits).
Now, it'a mostly kids dressing up at school/daycare. Some go around asking for candy, but since I live in a tall building in the middle of the city, not many kids get in the door. Still there's not much tricking going on. An occasional egg thrown, but no more than that. The adults sometimes have costume parties, but that's mostly the younger ones. Come to think of it, it would be fun to have a Halloween party. I just need to find the energy... LOL