1. Introduction of the game:
Onefootball is an exciting and immersive mobile game that allows users to experience the exhilaration and strategy of a football match right at their fingertips. With stunning graphics and realistic gameplay, players can dive headfirst into the world of football and lead their favorite teams to victory.

2. All characters and levels of the game:
In Onefootball, players have the opportunity to choose from a wide range of international football teams, including popular clubs and national squads. Each team is equipped with a roster of skilled and iconic players, replicating the real-world football experience. As players progress through the game, they unlock new leagues, tournaments, and various levels of difficulty, offering an enriching and challenging gameplay experience.

3. What attracts users most to the game:
Onefootball's most attractive feature is its ability to provide an authentic and immersive football experience. From creating match strategies to making crucial in-game decisions, players have full control over their team, upping the excitement and competitiveness of each game. Additionally, the game's intuitive controls and impressive graphics enhance the overall enjoyment, drawing users further into the world of football.

4. Why it is popular:
The popularity of Onefootball stems from its ability to meet the desires of both casual gamers and football enthusiasts alike. The game offers easy accessibility for casual players to enjoy quick matches, while also providing advanced features and challenges for football fans seeking a more realistic and strategic experience. The seamless combination of stunning graphics, realistic gameplay, and a wide range of playable teams contributes to its widespread appeal.

5. When the game was released and how many versions are currently available:
Onefootball was initially released in [insert year]. Currently, the game has [insert number] versions available, each with enhanced features, improved gameplay mechanics, and an expanded roster of teams to choose from.

6. The most difficult part of the game:
The most challenging aspect of Onefootball is undoubtedly the high level of competition players face as they progress through the game. The AI-controlled teams become increasingly formidable, making strategic decision-making and quick-thinking vital for achieving victory. Mastering advanced techniques, managing fatigue, and adapting to different playing styles present an engaging and demanding gameplay experience.

7. Strengths and weaknesses of the game:
Onefootball's strengths lie in its stunning graphics, realistic gameplay mechanics, and extensive roster of playable teams. The game's ability to provide an immersive football experience is highly commendable. However, a potential weakness could be the reliance on in-app purchases, which may limit some players' ability to unlock certain features without additional spending.

8. Other games developed by the same developer:
The developer of Onefootball has also created a range of other successful mobile games such as [insert game names]. These games often revolve around sports, offering similar immersive experiences for enthusiasts of various sports disciplines.