According to Gamasutra website, progression is the path from beginning to end the player takes. Today I would like to discuss progression blockade. I thought the possible ways of progression blockade requirement into levels of characters, how much quests did a player accomplish? or have certain items. Or you just let a player walk about everywhere at the beginning. I might frame the question in a confusing way. Please tell me. For example, some game requires a player to do or die. Another game lets a player move forward despite unfulfilled prerequisite. Another question: when your player wants to go to another town/city/village/Someplace, do you allow them to move freely or you build a wall/a fence/a cave to black them?