If you have not played since before March 31st, log in to the game between May 1st and June 1st, and you will receive a free Return Package.
Items in the Return Package:
-5 Zeny Bags (10 Zeny)
-Skill Reset Vellum
-Tame Kelberop Mount (30 Days)
-Gold Membership Pack
-Refinement Starter Pack (3 Infiniums, 3 Blessing Powders, 3 Lucky Powders)
-Pandora Weapon Box
-Imitation Epic Weapon Box
If you have played after March 31st, and accumulate at least 10, 20, or 30 hours of playtime between May 1st and June 1st, you will get one of the following rewards:
10 hours of playtime: +5 Immediate Refine Stone (Weapons)
20 hours of playtime: +8 Immediate Refine Stone (Weapons)
30 hours of playtime: +10 Immediate Refine Stone (Weapons)
*Only 1 reward will be given based on playtime.
*All prizes will be sent out after the event period ends.