It's Time To Test This Theory
This time I didn't need to wait cluelessly about how to activate it. I shouted when it was done, and the magical worlds opened the portal.
As the first batch of my brave fighters entered the world, I saw a scene similar to Earth. Plain fields appeared all over the place, and there were few scattered towns and cities.
"Zombies!" but amidst all these towns and cities, I found a grand number of zombies. They appeared outside the towns and cities, encircling them as if they were protecting some sort of a treasure.
"Zombies have dens out there… What luck!" it went without saying that these towns and cities were already conquered and controlled by zombies.
Chaos brought out by zombies weren't an exclusive thing for my Earth. The plague of zombies hit that world hard it seemed, and now many towns and cities were turned into dens.