It's all about the theme!
Bassoon Boy wrote:
That's what after our second game with Dunwich we house-ruled that green-bordered, yellow-bordered and light blue-bordered monsters can not appear on a gate in Dunwich, just keep drawing until you get one of the others.
I've played a couple of games where all monsters except green bordered monsters are moved in Dunwich. The vortex pulls them. In neither case did the Dunwich Horror come out. On the other hand, I made sure an investigator was up there as soon as the first gate came out to defeat the monsters that came out.