We need another challenging activity beside the mines. A magic/cursed maze with lots of traps, puzzles and sometimes with secret rooms full of rewards is exactly what we need. The players can try to solve the maze even without high damage gear and have fun by solving the puzzles.
On the pvp servers a player can invade the maze by paying a fee and will get cursed ( turning in to a ghost and can slay other players to get their loot).
On the way to the climbing tower you can find a big, flat, green, empty area. This spot would be greater for a procedurally generated maze which is covered with fog or roots on top so we can’t solve it without exploring.
The entrance is blocked by a gate which you can open only by paying a fee (random resource). Once a grope of people is in, the gates will close, so the only way out is completing the maze/ find a teleport potion fountain/ use a teleport potion you have got with you / die and spawn in the town.
During the exploration you may find few types of challenges like solving a puzzle or hit all targets with a bow without missing once. For finishing the challenge the player will get a reward (resource or even a tool / weapon part). If the player misses or solves the puzzle wrong, he will be punished.
The punishment can be different. Just spawning a crowd of enemy’s or adding a difficulty to the maze, like turning the lights off or placing more traps in the maze.
The traps should be visible if you know what you are looking for. A pressure plate on the floor, a rope that is blocking the way and so on. Players will have to avoid the traps or activate them from a safe distance. The pressure plate can be activated by tossing an item on it. You can cut the rope or shoot it with an arrow. On activating one of the traps it will release spikes/ ignite the player/ open a spike pit and so on. If the traps are not lethal an are just doing a bit of damage, the players will not be able to regenerate HP so after doing few mistakes, it will have consequences.
When ever the player dies and has no one on his side to safe his loot, it will disappear and can be found some where in the maze in a chest.
Finally the player reaches the end and can claim his reward! After completing the maze, he will be teleported back out to the city.
Personal twist (optional)
The reward at the end of the maze should be special and give the player a possibility to chose from. There can be three random generated tools or weapons (bags included) from which the players can chose. Every player will get his own rewards to choose from (for this he/she will have to touch the stone with a hand symbol on it like at the skill shrines.). If the player decides to get two or even all three rewards, he/she will have to insert a certain amount of coins to unlock these.