The Legend of Zelda: Ocarina of Time

Ocarina of Time is a video game in which the player has a lot of freedom thanks to the presence of extensive areas. Although Link's quest to defeat Ganondorf is linear, there are numerous additional quests in these areas that Link can complete that are not required to complete the game in its entirety. An example of this is obtaining the so-called Biggoron Sword, the most powerful sword in the game.