The Dyradeizer is the "boss" from the original Thunder Force game. It is a large asteroid fortress created by the ORN Empire to attack the Galaxy Federation, being protected by various shield generators which render it invisible. After the player destroys the shield generators, the screen will change to show the Dyradeizer, which must be taken down by destroying it's weak spots.

Structures

• Lia (リア): Its official name is Druo Lia, and it shoots a fan-shaped attack to enemies approaching from above. 300 points.
• Atelia (アテリア): An improved Lia. Its attack power is increased up to 7 shots. However, its attack interval is longer. 500 points.
• Shaidoro (シァイドロ): Distributed type of Dyra. Its attack power is higher than that of Atelia. 500 points.
• Wasdria (ワスドリア): Located on a extension of Dogfain. 250 points.
• Solenia (ソレニア): Energy control base. When this base is destroyed, energy stops flowing to the ground bases and the ground attacks are interrupted as a result. 150 points.
• Dyra (ダイラ): Central nucleus. By destroying it at the center of the Dyradeizer space station the whole airship's operations cease. Once destroyed the Fire LEO moves to the next combat area. 2000 points after destroying a Solenia on Dyradeizer. 12000 points with the Solenia intact.

Thunder Force
Terminology	Edra N. Fern • Fire LEO • Dyradeizer