1. Introduction of the game:
Sonic The Hedgehog 4 Episode II is an exciting platformer game that continues the adventurous journey of the renowned blue hedgehog, Sonic. Developed by Sega, this game serves as the second episode in the Sonic The Hedgehog 4 series. Players are plunged into a vibrant and fast-paced world where they must join forces with their trusty sidekick, Tails, to defeat the evil Dr. Eggman and his nefarious plot to conquer the world.

2. All characters and levels of the game:
In Sonic The Hedgehog 4 Episode II, players can embody the iconic character of Sonic and his loyal fox friend, Tails. As they progress through the game, they will encounter a plethora of enemies, including Dr. Eggman's mechanical minions and other classic Sonic villains. Additionally, players will journey through a diverse range of levels, each showcasing unique environments such as lush forests, fiery lava caves, futuristic cities, and treacherous underwater depths.

3. What attracts users most to the game:
One of the most alluring aspects of Sonic The Hedgehog 4 Episode II is its nostalgic appeal, as it pays homage to the beloved Sonic games of the past while incorporating modern graphics and gameplay elements. The game boasts a dynamic soundtrack that perfectly complements the exhilarating speed and adrenaline-fueled action. The ability to play as both Sonic and Tails simultaneously also adds a new dimension to the gameplay, facilitating cooperative play and strategic maneuvers.

4. Why it is popular:
Sonic The Hedgehog 4 Episode II has garnered immense popularity due to its ability to capture the essence of classic Sonic games while introducing fresh and engaging content. The game showcases stunning visuals, responsive controls, and exhilarating gameplay, all of which contribute to a highly enjoyable gaming experience. Sonic's widespread recognition and appeal as one of gaming's most iconic characters also contribute to the game's popularity, as fans eagerly anticipate each new installment in the series.

5. When the game was released and how many versions are currently available:
The game was initially released on May 15, 2012, across various gaming platforms, including PlayStation 3, Xbox 360, iOS, Android, and Windows. As of now, Sonic The Hedgehog 4 Episode II is available in its original version, and no subsequent versions or remasters have been released.

6. The most difficult part of the game:
One of the most challenging aspects of Sonic The Hedgehog 4 Episode II is navigating through the intricately designed levels, which require precision platforming skills and quick reflexes. Additionally, players may encounter formidable boss battles that demand strategic thinking and precise timing to defeat. Mastery of Sonic's speed and Tails' unique abilities is crucial to overcoming these challenges and progressing through the game.

7. Strengths and weaknesses of the game:
The game's strengths lie in its visually stunning graphics, captivating gameplay, and the seamless integration of cooperative play between Sonic and Tails. The nostalgic feel and faithful homage to classic Sonic games also greatly appeal to fans. However, some players may find the game's difficulty level to be higher than expected, which can potentially frustrate those seeking a more casual gaming experience.

8. Other games developed by the same developer:
Sega, the developer of Sonic The Hedgehog 4 Episode II, has an extensive portfolio of games. Some notable titles developed by Sega include the Sonic the Hedgehog series (including Sonic Mania and Sonic Forces), the Yakuza series, Shin Megami Tensei, and Total War series, among others. Sega's diverse range of games showcases their expertise across various genres, catering to a wide audience of gamers.