Silverfall - Preview @ GamersInfo

The city of Silverfall will also evolve as the player makes choices in favor of nature or technology. It's by no means a one time decision. There are several quests with more than one possible solution. The hero must choose whether to advance technology or preserve nature several times throughout the game. It is these choices that determine how Silverfall is rebuilt.

But there's no rush. Silverfall is, for lack of a better term, a free-roaming RPG. The average player will probably spend around 25 hours on the game. It could be less if the player ignores all the optional side quests or much more if they are determined to become best friends with every NPC ally and do every quest in the game.