Nexon does. It was introducing the 2-D fantasy MMORPG game MapleStory to North America. Since then, the game has grown with plenty of content from new characters (like Kanna and Hayato) to extensive character customization options.
To celebrate this eighth anniversary, Maplestory is holding a number of events for players to enjoy, including daily eighth anniversary coin giveaways to all players level 10 and above, and special XP bonus events and hot-days throughout the month. Special celebration boxes containing in-game items will also drop off defeated mobs.
As for going into the ninth year, NA Producer Teddy Kim stated, "We have a dedicated and engaged group of players, and we appreciate the loyalty and passion they have for MapleStory. We are committed to continuing to deliver the best content to our players to keep the adventures rolling."
[Source: Nexon America press release]