1. Introduction of the game:
Asphalt 8: Airborne is an exhilarating racing game developed by Gameloft. It offers an immersive experience where players can engage in high-speed races, perform stunts, and compete against opponents across various stunning real-world locations. With its realistic graphics and intense gameplay, Asphalt 8: Airborne provides an adrenaline-pumping experience for racing enthusiasts.

2. All characters and levels of the game:
The game features a wide array of customizable cars from renowned manufacturers such as Ferrari, Lamborghini, and Bugatti. Each car possesses unique attributes and performance capabilities, allowing players to tailor their racing experience to their preferences. Furthermore, Asphalt 8: Airborne provides a diverse range of tracks set in iconic cities, including Tokyo, London, and Paris, as well as exotic locations like the Nevada Desert and the French Alps.

3. What attracts users most to the game:
One of the primary attractions of Asphalt 8: Airborne is its arcade-style gameplay, combining intense racing with gravity-defying stunts and aerial maneuvers. The game offers a sense of thrill and excitement, as players can perform barrel rolls, 360° jumps, and flips while racing against opponents. Moreover, the online multiplayer mode enables users to compete against other players worldwide, adding a competitive element and fostering a sense of community within the game.

4. Why it is popular:
Asphalt 8: Airborne has gained popularity due to its stunning graphics, realistic physics engine, and immersive sound design, which provide an unparalleled racing experience on mobile devices. The game's extensive selection of cars, levels, and customization options also contribute to its popularity, as players have the freedom to personalize their vehicles and compete in various challenging races. Additionally, regular updates and new content releases by the developers keep the game fresh and engaging for its dedicated player base.

5. When the game was released and how many versions are currently available:
Asphalt 8: Airborne was initially released in August 2013 for iOS and Android platforms. Since then, the game has received numerous updates and refinements, contributing to its longevity and continuous popularity. As of now, Asphalt 8: Airborne has several versions available, including the original release and subsequent updates, ensuring there is always new content and features for players to explore.

6. The most difficult part of the game:
The most challenging aspect of Asphalt 8: Airborne lies in mastering the game's controls and techniques to maximize speed and perform intricate stunts. Achieving precise timing during jumps and perfecting drifts on sharp turns can be demanding, requiring both skill and practice to master. Additionally, competing against skilled opponents in online multiplayer matches adds another layer of difficulty, as players must strategize and adapt to the ever-changing race dynamics.

7. Strengths and weaknesses of the game:
Strengths:
- Stunning graphics and realistic physics engine
- Vast selection of cars from prestigious manufacturers
- Diverse and visually captivating race tracks
- Intense gameplay with high-speed races and exhilarating stunts
- Regular updates and new content additions

Weaknesses:
- In-app purchases may be required for certain cars or upgrades
- Requires a stable internet connection for multiplayer mode
- Steep learning curve for mastering advanced techniques and controls

8. What other games have been developed by the same developer:
Gameloft, the developer of Asphalt 8: Airborne, has created various other popular games for mobile platforms. Some notable titles include:
- Asphalt 9: Legends
- Gangstar Vegas
- Modern Combat series
- N.O.V.A. Legacy
- Iron Blade: Medieval Legends RPG
- Order & Chaos Online

These games showcase Gameloft's expertise and success in developing immersive and high-quality gaming experiences across different genres.