1. Introduction of the game:
WildCraft: Animal Sim Online 3D is an immersive simulation game developed by Turbo Rocket Games that allows players to experience the life of wild animals in a vast, interactive environment. In this game, players can explore nature's beauty, hunt for food, and engage in battles for survival while raising a family of their chosen animal. It's a unique blend of role-playing and adventure that provides an escapism into the wild with stunning 3D graphics and engaging gameplay mechanics.

2. All characters and levels of the game:
WildCraft offers a range of characters to choose from, including various wild animals like wolves, foxes, lynxes, and more. Each animal comes with distinctive abilities and customization options, allowing for a personalized experience. The game features multiple levels, representing the animal's life stages, from a young cub to an adult. As players progress, they unlock higher levels with more challenges and opportunities to discover new territories and dens, as well as to grow their animal families.

3. What attracts users most to the game:
Many users are drawn to WildCraft for its open-world setup and the freedom to explore without limitations, creating their own stories within the wild. The rich 3D graphics offer a realistic and engaging representation of the wilderness. Players are also attracted by the ability to customize their animal avatars and the social aspect of forming packs or clans with friends and other players online.

4. Why it is popular:
The popularity of WildCraft stems from its unique premise that combines nature simulation with role-playing elements, appealing to players who enjoy both genres. It allows for creative expression through customization, teamwork in multiplayer mode, and the thrill of survival challenges. WildCraft provides an adventurous escape with an intuitive user interface and accessible mechanics that cater to a wide audience, including younger gamers.

5. When the game was released and how many versions are currently available:
WildCraft was released in 2018 and has gone through various updates and versions since its initial launch. The game is frequently updated with new features, animals, and seasonal events, ensuring that the content stays fresh and engaging for the player base. The exact number of versions may vary, as the game is under continuous development to improve and expand the gameplay experience.

6. The most difficult part of the game:
The most challenging aspect of WildCraft often involves survival elements like hunting, finding resources, and protecting one's family from predators and other dangers in the wilderness. As the animal and its family grow, the stakes get higher, with players needing to strategize and exhibit skill to overcome these hurdles and ensure their lineage survives.

7. Strengths and weaknesses of the game:
Strengths of WildCraft include its rich and diverse environments, the freedom of exploration, and the social interaction through multiplayer gameplay. The customization options and the simulation of life cycles add depth to the game. However, some players might find the game's in-app purchases as a weakness, feeling they are necessary to progress faster or access certain content. Furthermore, while the game offers a lot to explore, there could be a need for more varied objectives and challenges to sustain long-term engagement.

8. What other games have been developed by the same developer:
Turbo Rocket Games, the developer of WildCraft, specializes in creating simulation and role-playing games that often revolve around animals and nature. Some of their other notable games include "Dragon Sim Online," "Cat Sim Online," "Dog Sim Online," and "Wild Panther Sim 3D," each providing unique experiences similar to WildCraft but with different focus animals and settings.