1. Introduction of the game:
Asphalt 9: Legends is a thrilling and action-packed racing game that offers players an adrenaline-fueled experience on their mobile devices. Developed by Gameloft, this game takes street racing to a whole new level with its stunning graphics, realistic gameplay, and a wide range of exquisitely designed cars.

2. All characters and levels of the game:
In Asphalt 9: Legends, players have the opportunity to choose from a multitude of iconic cars and race against formidable opponents. The game features a vast collection of vehicles, including popular manufacturers like Ferrari, Lamborghini, Porsche, and many more. Each car can be customized and upgraded to enhance both performance and appearance. Additionally, the game offers a variety of challenging levels set in different locations across the world, providing players with diversified racing experiences.

3. What attracts users most to the game:
What truly captivates users in Asphalt 9: Legends is its immersive gameplay and realistic graphics. The game boasts stunning visuals and detailed environments, combining with dynamic sound effects to create an unparalleled racing experience. The ability to perform breathtaking stunts, such as 360-degree jumps and barrel rolls, adds an extra layer of excitement. Moreover, the online multiplayer mode allows players to compete against friends and other racers from around the globe, intensifying the competitive aspect and ensuring endless entertainment.

4. Why it is popular:
The popularity of Asphalt 9: Legends can be attributed to its combination of high-quality graphics, addictive gameplay, and an extensive car collection. The game provides a perfect balance between intense street racing and the joy of owning and customizing legendary cars. It offers a highly engaging experience that keeps players coming back for more thrills and challenges, making it a favorite among racing enthusiasts.

5. When the game was released and how many versions are currently available:
Asphalt 9: Legends was initially released on July 25, 2018, and has since garnered a massive fan following. Currently, the game is available on various platforms including iOS, Android, and Windows, ensuring access for a wide user base. Gameloft continues to support and update the game with new features and content, adding to its longevity and keeping players engaged.

6. The most difficult part of the game:
The most challenging aspect of Asphalt 9: Legends lies in mastering the precise timing and maneuvering required to execute perfect drifts and stunts. Achieving optimal speed while avoiding obstacles and rival racers demands sharp reflexes and skillful control over the car. Acquiring and upgrading high-performance vehicles becomes crucial in tackling the increasingly demanding races, making strategic decision-making an essential aspect as well.

7. Strengths and weaknesses of the game:
One of the key strengths of Asphalt 9: Legends is its visually stunning graphics and realistic physics, creating an immersive and visually appealing racing experience. The extensive car collection and customization options offer players a sense of individuality and progression. However, some players have noted that the game's progression system can be somewhat challenging, requiring a significant investment of time or money to unlock certain cars and upgrades. Additionally, a few users have encountered occasional connectivity issues during online multiplayer races, which can disrupt the experience for some players.

8. Games developed by the same developer:
Gameloft, the developer behind Asphalt 9: Legends, has an impressive portfolio of successful games. Some notable titles include Asphalt 8: Airborne, Modern Combat series, Gangstar series, and Dungeon Hunter series. These games span various genres, showcasing Gameloft's versatility and expertise in developing captivating and high-quality mobile gaming experiences.