Rupees have a long history in The Legend of Zelda Franchise. They have been used since the original version, making their debut in January 1987. The currency of the franchise has
been used to purchase anything from milk to bugs to pieces of meat that attract foes. Rupees can be found in a variety of places, including the insides of many forms of shrubbery, boxes, pots, and enemies Link has defeated. There are also ways to earn rupees by playing mini-games, trading objects to other people (for example, masks), and using many in-game tricks to obtain them. Throughout the game, Link may find that he has a shortage of space to hold rupees. If Link is under such circumstances, it may be time to look for an upgraded wallet. Still, there is usually a way to bypass most situations with little cost to Link. The use of rupees is usually promoted in side-quests that are not required to complete the storyline.
Rupees have had general values assigned to them by color since the start of the franchise.
Generally speaking, a green rupee has always been assigned a value of 1 rupee (the one exception coming from The Legend of Zelda, in which green rupees did not exist).
Blue Rupees have consistently been assigned a value of 5 rupees, however, in The Legend of Zelda: Oracle of Seasons and The Legend of Zelda: Oracle of Ages, it was worth a whopping 100 rupees.
Yellow Rupees have only appeared in three games ( The Twilight Princess, The Wind Waker, and The Minish Cap), but its value has always been the same, 10 rupees.
The value of a red rupee has varied over time. In the first game, The Legend of Zelda, a red rupee had a value of a single rupee. In The Oracle of Seasons and The Oracle of Ages, the red rupee was worth 5 rupees. However, in all other cases, it has been worth 20 rupees.
Purple rupees, whenever they have appeared, are always worth 50 rupees.
Rupees with values larger than 50 rupees have been widely varied. Orange Rupees have appeared four times, usually being worth 100 rupees (they were once worth 200, though). Silver rupees have always been worth 200 rupees, but also only appeared in four games. "Huge" rupees have also made appearances. In The Phantom Hourglass, a huge green rupee is worth 100 rupees, while huge red and gold rupees are worth 200 and 300 rupees, respectively. Both of the Huge rupees found in The Ocarina of Time (Red and Gold) were worth 500 rupees (the maximum amount of rupees that Link can hold in the game).