MMIIIWilyCastleConcept.png (435 × 268 pixels, file size: 148 KB, MIME type: image/png)
Concept art of the Mega Man III Wily Castle from the book Mega Man Official Complete Works. Image from the Spanish Mega Man wiki.
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Wily Castle (ワイリー城), also known by other names such as Wily Fortress, Wily Stage, Skull Castle...