A friend of mine wants to DM a game where the player characters are all literally tied together, and have to find a way out or somesuch.
Is it possible to physically restrict characters from getting further away from each other than a certain distance? Like chaining them together, but more 'permanent'?
Mundane chains can be broken, the locks can be picked, or one of the Chained-Ones can grow to a larger size to break free. A magical chain might not be broken normally or picked, but if a character grows in size, the magical chains grow as well, thus freeing all of the other 'inmates'.
Is there any way to keep characters from leaving each other, through magic? Or at least inconvenience them greatly when they DO leave each other, by constantly harming them when they get too far away?