|Description||A stage based on a castle's inner keep. Use the sprawling walls to your best advantage.|
|Player 1||Player 2|
Castle Keep (Royal Citadel in Japan) is a Holosseum stage in Custom Robo (Nintendo 64), Custom Robo V2, and Custom Robo (GameCube). Use the sprawling walls to your advantage in this stage that appears to be a castle's inner keep.