On the road surface, there are guiding signs.
Above the entrance to the palace, a few gigantic white glowing words float.
"Undersea Maze".
The train gently lands on the road and drives into the palace along the road. Surprisingly, although this palace is built underwater, not a single drop of water can be seen inside, and there's plenty of oxygen.
Immediately after—
A line of text appears on the screen of the train's control panel.
"Train Captain, please disembark to select your maze difficulty."
"Truly amazing..."
The bald man shows a flash of shock in his eyes. This is his first time encountering such an adventure located in water, and without delay, he steps out of the train and stands inside the palace, which has a ceiling tens of meters high.
An empty and enormous palace.
The originally large train behind him seems almost inconspicuous.
In the next moment!
In the air of the palace, five huge light screens appear, along with another light screen.
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