The Maple Rewards system allows you access to items normally sold in the Cash Shop, by using Reward Points that you can earn in the game.
You can earn Reward Points in the game by participating in events, defeating bosses, clearing dungeons, and even leveling up.
You can also get a small amount of Reward Points by purchasing items from the Cash Shop with NX Prepaid or NX Credit. Reward Points are used to purchase items in the Maple Rewards Shop or to apply a 30% discount on certain Cash Shop purchases.
The items in the Maple Rewards Shop will be updated frequently, so don't forget to check it regularly!
Learn more here: Maple Rewards System