In just one week, the Nexon Maple Story M Mesos side-scrolling adventure has reached three million downloads on iOS and Android.

It's a lot, but it's not unexpected since Nexon's MapleStory has had a large PC player base for years, with more than 280 million characters created since the 2003 game.

In the Apple App Store, Maple Story M Mesos has been ranked number 1 in five countries, including Malaysia, Singapore and Taiwan. The game is also one of the 10 best in 11 countries.

It's a bit more difficult in the United States. The game reached No. 45 in the highest scores and No. 3 in the best RPGs in the Apple App Store. The game is also number 46 in the highest rate and number 3 in the best RPGs in the Google Play Store.

To celebrate the three million downloads, Maple Story M Mesos organize a special event in the game from July 31 at 7:00 p.m. until August 10 at 11:59 p.m.Maple Story M Mesos players who log in during this time will receive additional rewards.