- "Spectral plans of infinite potential. Uncharted territory."
- ―Travel brochure description, Make a Good Mega Man Level 3
The Grey Isles is a bonus tier in Make a Good Mega Man Level 3. It is a bizarre archipelago where space-time is in constant flux, with many simulations acting as trials to seal away an ancient evil. The Grey Isles are only accessible after clearing the Wily Stadium and obtaining every Energy Element from the fifteen primary tiers; after which, the head of Dr. Regal's decoy Dr. Wily robot will appear outside the Victor Heights hotel. With Regal himself announcing his intention to unseal the island's evil, Mega Man gives chase to stop him.
Like Tier X in Make a Good Mega Man Level 2, this tier contains bonus levels made by developers, including two levels that were previously intended to be contest entries. Unlike in MaGMML2, however, the Grey Isles are split across different islands, with each one forcing Mega Man to clear a certain number of levels before a portal to another island will appear. Additionally, strange floating rock-like entities are present as NPCs, commenting on Mega Man's progress and Dr. Regal's activities. One of these entities is a member of the Quiz Clan: the Quiz King, who will give the Energy Saver NEO upgrade if Mega Man passes his quiz.
Levels
