Sauce987654321 wrote:The boss dosen't move. It is just there. Image you're on a bridge over a canyon, and a dragon attack you, but it's such a big dragon, you only fight its head. That's what it's like.
Maybe you could make it cost twice or more of their speed to move a square (10'-15' to move one square) while the boss moves at normal speed.
Colossal monsters generally fit into a 30' square, even though they are much larger than that. That is because it was meant to make it easier to use and play with on the map and is not meant to be an accurate representation of the monster. So you don't need to necessarily make the creature occupy the exact same size of squares that the monster is.
I guess for starters, you could shrink the map and make the boss occupy a bunch of squares with a giant reach. Players could move at 1/2 speed to represent how far they are from the boss.
I can probably think of more ideas that I'll post later.