1. Introduction of the game:
Puzzles & Conquest is a unique blend of match-3 puzzles and strategy-based kingdom management that thrusts players into a world of fantasy and warfare. It combines the addictive nature of tile-matching games with the deeper gameplay elements of base-building and hero collection, all set in a mythical land where players must rise to become a legendary ruler.

2. All characters and levels of the game:
The game boasts a vast array of characters, often referred to as heroes, each with special abilities, classes, and roles within a player’s army. These heroes span various levels of rarity and power, allowing players to assemble a diverse team of warriors, mages, and other fantastical entities. As for levels, Puzzles & Conquest features numerous campaign stages, player versus player arenas, and special event dungeons that challenge the strategic and puzzle-solving abilities of players.

3. What attracts users most to the game:
Users are primarily attracted to Puzzles & Conquest for its engaging combination of puzzle mechanics and strategic depth. The satisfaction of forming powerful combos in match-3 puzzles, coupled with the strategic layer of managing resources, upgrading heroes, and defending against adversaries, makes for a compelling gameplay experience. The social aspects, including forming alliances and competing with others, also add to the game’s appeal.

4. Why it is popular:
The popularity of Puzzles & Conquest can be attributed to its accessible gameplay that is easy to grasp but challenging to master, the consistent content updates that keep the game fresh, the vibrant community, and the rewarding progression system that ensures a satisfying sense of achievement as players build their kingdoms and level up their heroes.

5. When the game was released and how many versions are currently available:
Puzzles & Conquest was originally released on [date of release]. Since its launch, the game has seen numerous updates and versions, each introducing new features, heroes, and special events. Players should check the game’s official page on their mobile store or website to find out the latest version number and update history.

6. The most difficult part of the game:
For many players, the most difficult part of Puzzles & Conquest lies in the late-game content where strategic planning, alliance coordination, and resource management become crucial. The complexity of hero synergies and the challenge of competing against well-coordinated opponents in high-level play can be daunting for even experienced players.

7. Strengths and weaknesses of the game:
The game’s strengths include its engaging gameplay that fuses two popular genres, a vast array of content and heroes to collect, and a strong community aspect. However, weaknesses may include a steep learning curve for new players with the depth of the game's systems, and potential for pay-to-win elements, where players who invest money may gain significant advantages.

8. What other games have been developed by the same developer:
The developer of Puzzles & Conquest has also created other titles. However, to provide accurate information on other games developed by the same team, one would need to know the exact developer or studio behind Puzzles & Conquest. Once the developer is identified, a list of their games can be provided.