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Sonic News Network
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Sonic Blast
Silver Castle Zone

This chrome-plated castle is filled with Dr. Robotnik's most up-to-date mechanical monstrosities. Corkscrews, cannon-firing robots and steel spikes are just some of the dangers. Keep track of where transporters send you - things get confusing mighty quick!

— Description, Sonic Blast United States instruction booklet[1]

Silver Castle Zone (シルバーキャッスル[2] Shirubākyassuru?, lit. "Silver Castle") is the fifth and final Zone of Sonic Blast, which is represented by the silver color and its environment.


Silver Castle Zone is an artificial island base created by Dr. Robotnik which doubles as a flying fortress. When talking flight, the Silver Castle Zone has an appearance resembling the Death Egg.[3]



In gameplay, Silver Castle Zone features numerous transporters and an advanced spike wall.


Act 1

Act 2

Act 3


First boss

At the end of Act 3, Dr. Robotnik will show up in a hovercraft armed with laser cannons. The player must redirect twelve laser shots from this boss back at it to win the fight.

Special boss

After beating the first boss of Silver Castle Zone with all five Chaos Emeralds in one's possession, the player will be challenged by the true final boss of Sonic Blast. This boss a robotic machine that can split itself into two moving parts with saws on them, with one acting as a platform and the other acting as the hit target, while shooting blue energy balls. Land twelve hits on this boss to defeat it.

Giant Ring locations

Act 1

Act 2





Name Artist(s) Length Music track
N/A N/A 1:13


  1. Sonic Blast (Sega Game Gear) United States instruction booklet, pg. 11.
  2. Sonic Blast (Sega Game Gear) Japanese instruction booklet, pg. 22.
  3. Flynn, Ian; Sega (8 December 2021). "Sonic Blast". Sonic the Hedgehog Encyclo-speed-ia. Dark Horse Books. p. 163. ISBN 978-1506719276. "Silver Castle Zone - Dr. Eggman's artificial island takes flight, revealing a Death Egg-like appearance! Brave the traps to sink it to the bottom of the ocean."
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