1. Introduction of the game:
"Granny" is a first-person horror-survival game that thrusts players into a chilling game of cat-and-mouse. Developed by DVloper, this enticing and hair-raising game sets the simple yet terrifying objective of escaping from a decrepit house within a limited number of days, all while avoiding the clutches of the sinister Granny.

2. All characters and levels of the game:
The primary character is the player themselves, a nameless protagonist desperately seeking a way out. The main antagonist is Granny, a deceptively fragile-looking elderly woman with a penchant for violence and a terrifying level of alertness. Over the game's progression, players may also encounter other characters such as Grandpa, who adds to the challenge with his own unique behaviors. The game is set in a multi-level house, with each floor presenting its own set of puzzles, obstacles, and hiding spots that the player must navigate to escape.

3. What attracts users most to the game:
Users are most drawn to "Granny" due to its intense atmosphere, jump scares, and the ever-present tension of being hunted. The game's unpredictable AI for Granny also means that each playthrough feels different, with players unable to predict her movements, adding to the suspense.

4. Why it is popular:
"Granny" has gained popularity for its bone-chilling gameplay and the exhilarating rush it provides. It's simple to learn but hard to master mechanics appeal to both casual and hardcore gamers. Additionally, social media and word-of-mouth have escalated its popularity as people share their experiences and dare others to attempt the escape.

5. When the game was released and how many versions are currently available:
The game was initially released in November 2017. Since then, it has had several updates and versions, each building on the spine-tingling lore and gameplay of the original. These include "Granny: Chapter Two" and updates that introduce new difficulty levels, puzzles, and areas to explore.

6. The most difficult part of the game:
Many players consider the sheer unpredictability of Granny's movements and the severe consequences of making noise to be the game's most challenging elements. Additionally, the limited time window to escape adds pressure, making decision-making and strategic planning tough under stress.

7. Strengths and weaknesses of the game:
The strengths of "Granny" include its immersive sound design, tension-filled gameplay, and challenging mechanics that require patience and skill. However, its weaknesses may lie in the graphics, which some players might find lackluster, and potentially repetitive gameplay that could result in diminished scares over time.

8. What other games have been developed by the same developer:
DVloper, the developer of "Granny," has also created several other horror and suspense games that have captured the attention of thrill-seekers. These include "Slendrina" series, which expands upon the dark universe in which "Granny" is set, and "House of Slendrina," "The Child of Slendrina," and "Slendrina: The Cellar," each offering unique storylines and fright-inducing experiences. DVloper's penchant for creating engaging, eerie atmospheres is a signature trait seen across their game portfolio.