This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these template messages)(Learn how and when to remove this template message)
The Eternia playset (1986–1987) is the largest playset to be produced by Mattel for the Masters of the Universe line of toys. The playset has three levels featuring three towers with vehicles that run around the entire playset. Because of the playset's rare nature, there is a limited amount of information regarding it, its features, and its parts.
The Eternia playset is the largest playset to be produced by Mattel for the Masters of the Universe line of toys. It consists of three levels featuring three towers, with vehicles that run around the entirety.
The largest and primary tower comes in two pieces and is called the Central Tower. It comes with a Central Tower Base foundation. The key feature of the Central Tower is the Guard Lion. The Guard Lion head also comes in two pieces featuring the actual lion head and the lion jaw. Additionally, there are two arms, simply called the right and left lion arms that fit into the Central Tower. Finally, there are two gold gargoyles that guard the entrance steps to the playset leading up to the Guard Lion.
Eternia’s Central Tower comes with three floor levels officially called the "First Floor", "Second Floor", and "Top Floor". This is in addition to the ground floor level. Each level is reached by way of an Elevator which runs up and down on the elevator shaft.
The Eternia set comes with two secondary towers to the right and left of the Central Tower. The Grayskull Tower is a representation of Castle Grayskull and connects to the Central Tower base and reaches into the air at approximately half the height of the Central Tower. The Grayskull Tower fits four brown Monorail Arms into its face to support the monorail track. At its base, there is a prison for Evil Warriors, Snake Men or Horde characters secured by a prison gate.
The set's second smaller tower is the Viper Tower. The Viper Tower also attaches to the Central Tower Base, reaching into the air approximately half the height of the Central Tower. The Viper Tower is a representation of Snake Mountain and features four brown jagged monorail arms that fit into the face of the tower and support the Monorail Track. The Viper Tower's central feature is the Viper which comes unassembled mint in box. The Viper Tower comes with four chains that run from the collar around the neck of the Viper down to the Monorail Arms.
The monorail system in the set is made up of thirteen monorail arms and thirteen pieces of monorail track. The Central Tower fits five blue monorail arms into its frame. The Grayskull Tower fits four brown Monorail Arms. The forward Monorail Arm on this tower attaches to the aforementioned ball & chain. The Viper Tower also fits four monorail arms. These arms are a bronze color and have more intricate detail than the arms on the opposing tower.