Aging Card NTR (World) (Japanese: ポータブル永久のカード NTR (ワールド)) is a role-playing game developed and published by Nintendo for the Nintendo DS. The game follows the adventures of a young prince named Shou, who is on a quest to save the world from the evil forces of the Dark Lord. The game features a card-based battle system, where players battle monsters and bosses using a deck of cards. Players can customize their decks with various cards, which can be obtained through various means, including completing quests and buying them from merchants. The game also features an online mode, where players can battle each other over the Nintendo Wi-Fi Connection. The game also contains a variety of mini-games, which can be played in single-player or multiplayer. Overall, Aging Card NTR (World) is an enjoyable and engaging role-playing game that is sure to keep players entertained for hours.