1. Introduction of the game:
Hay Day is a popular farming simulation game that allows players to experience the joys and challenges of running their own virtual farm. From planting and harvesting crops to raising livestock and crafting goods, this game provides a captivating and immersive rural setting where players can create and manage their dream farm.

2. All characters and levels of the game:
In Hay Day, players encounter a variety of characters that add depth and personality to the game. These include friendly neighbors, quirky visitors, and helpful farm animals, each contributing to the lively and engaging world. The game also features multiple levels that progressively unlock new crops, buildings, and customization options, providing players with a sense of advancement and achievement.

3. What attracts users most to the game:
One of the key elements that attracts users to Hay Day is its simple and intuitive gameplay. The game appeals to both casual and dedicated gamers due to its relaxing and stress-free nature. Additionally, the charming graphics, charming characters, and the ability to connect and interact with friends through social features create a sense of community and enhance the overall gaming experience.

4. Why it is popular:
Hay Day has gained widespread popularity due to its ability to provide a virtual farming experience that is both accessible and enjoyable. The game's combination of strategic planning, creativity, and nurturing aspects appeals to a wide audience. Furthermore, regular updates and events keep the game fresh and engaging, fostering long-term player engagement and loyalty.

5. When the game was released and how many versions are currently available:
Hay Day was released for iOS and Android devices in June 2012. Since its initial launch, the game has undergone various updates and improvements, with multiple versions available to date. These updates continuously introduce new features, enhancements, and content to keep players entertained and motivated.

6. The most difficult part of the game:
While Hay Day is designed to be a relaxing and enjoyable experience, players can encounter challenges as they progress through the game. One of the most challenging aspects is efficiently managing resources and time to maximize productivity and profitability on the farm. Balancing crop planting and harvesting, animal care, and orders from customers can require careful planning and strategic decision-making.

7. Strengths and weaknesses of the game:
One of Hay Day's strengths is its visually appealing and immersive graphics that bring the farm and its characters to life. The game also offers a user-friendly interface, intuitive controls, and regular updates to keep players engaged. However, some players may find certain aspects of the game to be time-consuming or reliant on in-app purchases for faster progression, which can be considered a weakness.

8. What other games have been developed by the same developer:
Hay Day is developed by Supercell, which is also known for creating other popular mobile games. Some of the other games developed by Supercell include Clash of Clans, Clash Royale, Boom Beach, and Brawl Stars. These games have also garnered significant popularity and have established Supercell as a leading developer in the mobile gaming industry.