1. Introduction of the game:
"Godus" is a captivating multi-platform god game developed by 22cans, a studio founded by Peter Molyneux, known for creating "Populous" and "Black & White." In "Godus," players are cast in the role of a deity, granted the divine power to shape the land, command the elements, and nurture the growth of a civilization. The immersive environment, paired with the objective of guiding and influencing the lives of tiny worshippers, makes "Godus" an intriguing mix of strategy, simulation, and world-building elements that appeals to a broad audience of gamers.

2. All characters and levels of the game:
The game primarily revolves around the followers, who are the main characters the player will interact with. As you progress, different types of followers emerge, each with distinct behaviors and requirements. The game unfolds in various levels that represent different ages and stages of civilization, from primitive societies to more advanced ones. Each level brings new challenges and opportunities to the player-as-god, with landscapes that can be sculpted and altered to guide the development of your followers.

3. What attracts users most to the game:
Players are most attracted to the satisfying sense of control and creativity that "Godus" offers. The ability to mold the terrain, construct a living world, and witness the direct impact of your divine interventions makes for an enthralling experience. The game's tranquil aesthetic, alongside the simple yet profound godly abilities, provides a unique form of escapism where players can lose themselves for hours in the serene act of creation and civilization management.

4. Why it is popular:
Its popularity stems from the pedigree of its creator, Peter Molyneux, and the legacy of his previous god games. The intuitive gameplay, combined with the mesmerizing experience of nurturing a continuously evolving world, keeps players engaged. The god game genre has a dedicated fan base, and "Godus" taps into that community with a modern touch.

5. When the game was released and how many versions are currently available:
"Godus" was initially released in a beta state in 2013, with several updates and iterations following over the years. As of my last update, the game has seen numerous versions across different platforms, each with updates and improvements based on player feedback and developmental milestones.

6. The most difficult part of the game:
The most challenging aspect of "Godus" can be the management and satisfaction of the followers' needs as the civilization grows. As their populations expand and their societies become more complex, balancing the various demands, shaping the land strategically, and foreseeing the long-term consequences of your divine decisions can be quite taxing even for seasoned players.

7. Strengths and weaknesses of the game:
Strengths of "Godus" include its engaging world-building mechanics, the relaxing atmosphere, and the sense of power it bestows upon the player. On the downside, some players have found the game's pacing to be slow, and the mobile versions have been criticized for their in-app purchase model. Moreover, updates and ongoing development have been sporadic, leading to dissatisfaction among some fans.

8. What other games have been developed by the same developer:
22cans, formed by Peter Molyneux, has also developed a title called "Curiosity – What's Inside the Cube?" which was a massive multiplayer experiment. Additionally, the developer has worked on "The Trail," a unique exploration and simulation game that focuses on travel and discovery.