The first episode features many of the same animation models seen in Mata Nui Online Game (2001). From the second episode, most of the mask designs drastically change to a more accurate representation of the actual LEGO toys. This is most apparent on Hafu's mask, which changes its look completely.
In the original release of the third episode, the Toa Nuva and the Bohrok-Kal were represented by very simplistic, stick figure-like drawings in wide shots. This was quickly corrected, however these drawing are still used for the Bohrok-Kal when Tahu activates the Mask of Time.
The first episode required viewers to click on an arrow button to make the dialogue progress. This feature was abandoned beginning from the second episode.
Originally, the animation of the last episode was set to match the music, but on modern computers, the clips play much, much faster, so the visuals and the audio are completely out of sync, and the music continues playing way after the screen has faded to black.
The series was accompanied by several writings which read like news reports and summarized the story of each episode. This was called the Wall of History.