As Okamoto encountered problems in the development of the remake, Shigeru Miyamoto instead proposed the creation of the "Triforce Series".[18] Each title was to refer to a piece of the Triforce (Chapters of Power, Wisdom, and Courage), revolving around a pivotal character (oracle) according to the chapter (Din for the Chapter of Power, Nayru for Wisdom, Farore for Courage).[19] Each game was to focus on a different gameplay element of the Legend of Zelda series: the Chapter of Wisdom was to be puzzle-based, the Chapter of Power, action-based. The gameplay focus of the third title was never revealed.[20] Each game was to have a new gameplay theme:
The Chapter of Power had a season theme, using Rod of Seasons to alter the four seasons and solve puzzles.[21]
The Chapter of Wisdom featured a color theme, which was to be used to solve puzzles.[22]
The Chapter of Courage was to have a theme of time, using morning, noon, evening and night to solve puzzles.[23]
These three games became known as the "Mysterious/Mystical Seed Trilogy", composed of Mystical Seed of Power, Mystical Seed of Wisdom, and Mystical Seed of Courage.[24] Mystical Seed of Power was said to be adapted from Capcom's original project, the original Legend of Zelda remake. Similarities to the original Legend of Zelda can be seen to this day in Oracle of Seasons.
A unique feature of the three games was to be their ability to be linked together using a password system (see Linking Secrets above). However, the coordination of three games proved to be too complex. To simplify, Mystical Seed of Courage was cancelled, thus reducing the series to two titles. Oracle of Ages was adapted from Mystical Seed of Wisdom (using Courage's time mechanic instead), and Oracle of Seasons from Mystical Seed of Power.[25] Together, they became known as the Oracle series of today.