Lineage II kicked off its 7-year anniversary this week with the start of a three week celebration with events, XP and prizes. From now through April 27th, players can enjoy the benefits of double experience and free teleports. Subscribing players will receive a number of special subscription anniversary rewards based on their subscription plan.

Players can hunt creatures during the event to earn blocks engraved with letters that can be sold, dropped or exchanged. Get enough letters to spell Lineage II or NCsoft and you can turn them into the NPC Angel Cat in any town for rewards. Additionally, past accounts will be reactivated through May 4th, 2011. Check out the official Lineage II 7th Anniversary Events page for more details.

Source: Lineage II website