User blog comment:TerrariamcSwaggins/Hey guys, what is your favorite thing about Terraria?/@comment-24281205-20131216174030

The flow of the game. You have to obtain this so that you can do this. You have to reach a certain level of defense and weapon power before trying certain things (Hero and Yrmir not withstanding). The HP and damage level of monsters are tied to your own stats at that particular level of the game. In the update, we are now forced to go back and spend time in biomes that were abandoned before (in order to get key molds, certain accesories, etc.)