Bay 12 Games Forum

If you've ever tried the alternating exits strategy in Desktop Tower Defense, you've seen the downfall of the neverending circle strategy. A long chain of enemies can be pathing in, and if the exit switches, the stragglers become the leaders, pathing to the new exit. However if the newcomers are faster or slower, eventually you're going to end up in a situation where at some point the new forerunners are partway along the circle already. I predict that the same thing will hold in DF: Foes will have a tendency to spillover into the abandoned paths and stay there, making the changing paths less and less effective.