This is the final boss battle vs Bowser & Bowser Jr. in World 8-Castle and the ending of New Super Mario Bros DS playing as Giant Blue Shell Mario by using .brAll castle bosses compilation of New Super Mario Bros. with Giant Blue Shells for Nintendo DS (1080p & 60fps) Enjoy - Rate - Comment - Subscribe .brEvery single boss in New Super Mario Bros DS, beaten with action replay codes that allow you to have gigantic Mario with a blue shell. Giant Mario 221b6acd .brAll Castle Bosses with Giant Blue Shell Mario in New Super Mario Bros DS. Original Idea from Typhlosion4President: .