1. Introduction of the game:
Game Pigeon is a popular mobile gaming app that offers a variety of exciting and addictive games for players to enjoy. It provides a convenient platform for users to engage in multiplayer gaming experiences with friends and opponents from around the world.

2. All characters and levels of the game:
Game Pigeon features a diverse range of games, each with its own unique characters and levels. From classics such as 8-Ball, Chess, and Poker, to more lighthearted options like Anagrams, Word Hunt, and Mini Golf, the app offers a wide selection to cater to different gaming preferences.

3. What attracts users most to the game:
One of the main attractions of Game Pigeon is its ability to facilitate multiplayer gaming directly through messaging apps like iMessage. This convenience allows friends to challenge each other in real-time, fostering a competitive and interactive gaming experience that keeps users engaged and entertained.

4. Why it is popular:
Game Pigeon's popularity stems from its accessibility and simplicity. The app's straightforward interface makes it easy for both casual and hardcore gamers to pick up and play, while the diverse range of games ensures there is something for everyone. The competitive nature of the multiplayer aspect further fuels its popularity, as users strive to outperform their friends and climb the leaderboards.

5. When the game was released and how many versions are currently available:
Game Pigeon was released in 2016 and has since gained a massive following. While it started with a limited selection of games, it has consistently expanded its library through regular updates. Currently, there is only one version available, continuously updated with new features and games.

6. The most difficult part of the game:
The most challenging aspect of Game Pigeon varies depending on the game being played. However, many users find the precise aim and strategic decision-making required in games like Pool or Darts to be particularly difficult. Additionally, the ability to anticipate and counter your opponent's moves in games such as Chess or Four in a Row adds an element of tactical complexity.

7. Strengths and weaknesses of the game:
One of the notable strengths of Game Pigeon is its seamless integration with messaging apps like iMessage, allowing for easy and convenient multiplayer engagement. The wide variety of games available also ensures there is something for every player's taste. However, one weakness is the lack of a stand-alone app, limiting gameplay options to an iMessage context only.

8. What other games have been developed by the same developer:
The developer of Game Pigeon, Game Pigeon LLC, has also developed other popular mobile games such as "8 Ball", "20 Questions", "Game of Dice", and "Dots and Boxes". These games showcase the developer's commitment to creating engaging and enjoyable gaming experiences for their users.