Understanding FFH Terrain

[torsoboy]

Do deer also turn into nightmares in hell? Or frogs even? Or do they remain deer?

In my current game, Hyborem spawned right to the uninhabitable North of my civ, and I was waiting forever for that deer tile to become a nightmare before I banished Hyborem. It never did change - AC counter apparantly never got high enough? Eventually I had to crush Hyborem before someone else did.

 

[Demus]

march can be scorched (fire 1 spell i think, or sun 1, not sure tbh) to become grass.

 

[Emptiness]

How does Marsh figure in to the vitalize/Genesis scheme of things ?

Marsh can't be terraformed. It can change to the Hell version, Shallows, which is otherwise functionally identical. (Well, Lizardmen don't get movement and strength bonuses in Shallows, but that probably doesn't matter very often.) (Edit: Actually it looks like Shallows doesn't have the movement cost penalty of Marsh.)

march can be scorched (fire 1 spell i think, or sun 1, not sure tbh) to become grass.

There are mods and modmods that allow Marsh to be terraformed, but in base FfH2 they cannot be changed.

Do deer also turn into nightmares in hell? Or frogs even? Or do they remain deer?

Deer and Fur remain the same on Hell terrain.