Thank you all guys!
Of course, it was made in Tier 2.
The project contains 244 .cpp and .h files. And the code weighs about 2Mb. So this contains tons of information.
Most of the interactive game objects were made in 3Ds max. Characters are made and decorated in Z-Brush.
The main menu, map, and levels are drawn in Photoshop with the help of Wacom Intuos 4m. This is what I spent most of my time on. Since childhood, I have been drawing more or less, but by doing this game I learned to draw better than before.
You can watch my early (not very professional) games made with Dark GDK:
https://www.bigfishgames.com/games/5929/veronica-and-the-book-of-dreams/ (2010)
https://www.bigfishgames.com/games/7553/sweet-kingdom-enchanted-princess/ (2013)
and compare graphics with my last game. Graphics in my previous games was kind of Matte Painting and I didn't draw them by hand.
I always spend most of my time making graphics to make it best I can. And I redraw everything many times...
The music was made by my brother, who has long been trying to become a composer ...