Advertising Blurbs - Nintendo 3DS (US):
    Collect all of the musical instruments and save the land of Hudson!

    Milon lives in the land of Hudson, where people use music to communicate with each other. However, Milon does not possess this ability. One day, he decides to visit Queen Eliza, who lives in Hudson's Secret Castle, but finds that the people have been robbed of their musical instruments and the castle overtaken by the Evil Warlord from the north region. Milon must explore the depths of the mazelike castle while defeating monsters that roam its corridors.

    Can Milon save Queen Eliza, take back the stolen musical instruments and defeat the Evil Warlord and his minions? Venture forth, and live the tale!

    This game is only playable in 2D.

    Contributed by Harmony♡ (20020) on Jul 19, 2016.

Back of Box - NES (US/Canada):
    Welcome to the land of Hudson's Secret Castle where people use music to communicate with each other. From the north, an Evil Warlord and his demons attack the people of Hudson and robs them of their musical instruments. Hudson's Queen Eliza is captured deep inside the Secret Castle.

    You must save Queen Eliza and get the musical instruments back. This will not be an easy task. The Secret Castle has many different rooms and each room is a maze filled with demons, secret passages and doors. However, Queen Eliza has hidden many helpful tools, instruments, and money in every room to help you. Use bubbles to help you find the places where they are hidden.

    Be very alert and think very quickly to solve the puzzle of each room. Just when you think you've made it, you must face and destroy each of 7 demon-monsters from the Evil Warload. You are Hudson's last hope!!! GOOD LUCK!!!

    Contributed by Zeppin (8426) on Feb 15, 2012. - Wii:
    Ever wonder what things would be like in Hudson Land? Believe it or not the answer has been under your nose for more than a decade! Milon's Secret Castle transports players to the land of Hudson, where battles are waged with bubbles, item collection is a crucial skill in life, secrets are hidden in every nook and cranny, and a single castle is all that lies between you and untold glory and riches. If you missed out on this Hudson platformer for NES™ back in '88, or weren't born yet, now is your chance to play a piece of gaming history! Milon's Secret Castle is now available on Wii™ Virtual Console™!!

    Guide Milon through the four levels of Garland Castle in his quest to reach the top floor and vanquish the big boss! The journey is a difficult one though, because the castle is locked up tight and Milon doesn't have the keys. You will have to use your bubble attacks to fend off the castle baddies while busting up every block in sight trying to find all of the hidden treasure and other secrets throughout the game.

    Unlike most platformers, Milon's Secret Castle is less about defeating all of the enemies in an area, and more about scouring every bit of each room to find the secrets that lie within Garland Castle! Milo can uncover practically anything in the game. This includes: items, power-ups, money, shields, keys, level exits, even shops! The only way to get to each level boss is to find the right secret items!

    Milon's Secret Castle has offered a formidable challenge to gamers for 21 years since its release in Japan. One contributing factor to this is the fact that Milon only gets one life, one chance at glory. In Hudson Land castle-conquering, would-be heroes are a dime a dozen. Do you have what it takes to reach the top? Download Milon's Secret Castle for Virtual Console™ today, and find out!!

    Contributed by DreinIX (10674) on May 25, 2008.