Spiderweb

While strolling around the woods to gather mushrooms, the protagonist, a young woman, is surrounded by small strange details adding up gradually. At some point, she encounters a giant spider that takes her to its lair, a large cave. She must explore the place in order to escape, handling light sources and solving puzzles without being noticed by the beast.
The gameplay has two dimensions to it:
1 - Light-based stealth. Light is useful to go around, and necessary to interact with certain things; but it also allows the giant spider to spot you.
2 - Puzzles. All tile and movement based, more or less with cobwebs as a theme, they're mandatory to complete the game.
Estimated playtime: 30 minutes if you play optimally, generally more than that.