The Elder Scrolls V: Skyrim is an action role-playing game, playable from either a first or third-person perspective. The player may freely roam over the land of Skyrim, which is an open world environment consisting of wilderness expanses, dungeons, cities, towns, fortresses and villages. Players may navigate the game world more quickly by riding horses, or by utilizing a fast-travel system which allows them to warp to previously discovered locations (Undiscovered locations cannot be fast-travelled to.) The game’s main quest can be completed or ignored at the player’s preference after the first stage of the quest is finished. However, some quests rely on the main storyline being at least partially completed. Non-player characters (NPCs) populate the world and can be interacted with in a number of ways; the player may engage them in conversation, marry an eligible NPC, or kill them.