Dim Tower

Mystery Solving Using "Light" and "Shadow"
This work is a puzzle action game in which the main character, who carries a magic lamp, and his alter ego, "Shadow", work together to solve the tricks.
"Shadow" can easily walk through terrain that humans cannot walk, such as wire mesh and thorn roads, but on the other hand, it is weak against "light" and disappears.
"Prince" lights the road with a lamp, and can sometimes perform actions unique to humans, such as activating a switch with that light.

Story of "Dim Tower"
A huge "Dim Tower" built to escape from the "Shadow Sea" prospered with the blessings of "the Sun".
However, "the Sun" has now lost its power, and the tower has followed the path of destruction and turned into the "Dim Tower".
The main character, "Prince," will walk through the interior of the ruined "Dim Tower" while tracing its history.