[PC][1997-2005?]Strange Magical box game

Platform(s): PC

Genre: Point and Click

Estimated year of release: 1997-2005

Graphics/art style: I would say it was Runaway style, but not sure.

Notable characters: The box, that stores items, and I THINK, spoke to you.

There are many other characters you speak and I think you help to, but not sure.

Notable gameplay mechanics: It's just a point and click, you moved your player around and spoke to people and they asked you things in exchange for other things you would need, if i remember correctly.

Other details: If i remember correctly, at the beginning of the game, you start in a square, and at the end of the game, you return to that square and open the ground thanks to the box.

Also, at some point in the game, you teleport to a strange location where there are tons of trees and a long brindge. There are some strange creatures there.

There's a moment where you go to a rollercoaster and just stop at the top, where you take an item before going down.

EDIT: this is the square you start on: https://i.imgur.com/nGtEWt9.png

And when it opens: https://i.imgur.com/6ftdtHu.png (forgive my painting skills)