Since the duels map update old maps got removed for nice fresh big new ones. But now you are stuck inside a barrier box where you cant escape. This is great but only for normal duels, custom duels should have an option to remove the barrier blocks and the anti explosive blocks outside the barriers and under the ground, and an option to remove the bedrock + timer. If this will be implemented you will be able to do lots of stuff with your friend like hide and seek or tnt fight or with explosive bows. I always did that with the old maps but now you cant do that anymore because of the barriers everywhere. If this gets implemeted people can up with so much new ideas and games.