『僕らはカセキホリダー』 (Bokura wa Kaseki Horider) is a Nintendo DS game developed by Konami. It is a fantasy RPG that follows the adventures of a young boy named Horider and his friends as they search for a lost relic known as the Kaseki Horider. The game features a unique battle system in which the player can use a variety of magical items to defeat enemies. The game also features a wide variety of puzzles and mini-games, as well as a deep story that progresses as the player completes objectives. The game's visuals are colorful and detailed, and the soundtrack is composed of a variety of catchy tunes. Overall, Bokura wa Kaseki Horider is a fun and engaging RPG that will keep players entertained for hours.