We don't know how much money Pokémon Shuffle is earning for Nintendo, but it's certainly tempting a decent number of 3DS owners to try it out for free. The tile-matching game has now reached 4 million downloads, which certainly isn't a number to be sniffed at.
The game is celebrating through new events - on the one hand it's giving all players a Complexity -1 item, which is nice. In addition there's a new event that'll run until 15th June; your goal is to capture a Shaymin, and clearing the stage will earn you 1000 coins first time around.
Four million downloads is impressive, especially if a decent portion of those players buy some gems; whether we like it or not Nintendo's getting a taste for the free-to-play market.