I want to create a campaign that has a huge area, and is sandboxy as possible, but have my players stay in that area. The goal is to get out of the area. I thought about running it low, or no magic, but when it comes to healing, and fun it kind of sucks.
The premise of my campaign is going to be that people are banished to what I call "The Marsh." It has armies, and natural barriers to keep people in, but my problem is someone casting fly and ruining my game. I want the players to kind of choose their own route. They can either be good and earn there way out, become crime lords and run the area, or do the unthinkable and bust out.
Is there like an curses or anything that I can do to have them stay in the area and keep magic in? Thanks.