I had a look at the iPhone US Top Free Chart and saw that the word game Ruzzle (previously known as Rumble) by Swedish MAG Interactive was at second place, beaten only by Google Maps. This nine or so months after the game first got popular in Sweden.
Then I had another look and saw how Swedish and Finnish developers are dominating the absolute top of the charts. Rovio's Angry Birds: Star Wars and Mojang's Minecraft as #1 and #3 on Top Paid, Ruzzle as #2 on Top Free and Supercell's Clash of Clans and Minecraft as #1 and #3 on Top Grossing.
Additionally, in the last month Toca Boca's Toca Hair Salon 2 topped at #5 on US Top Paid (iPhone) and #3 on US Top Paid (iPad).
Congrats to all developers involved. For all other Nordic developers: the benchmarks have been set. :)