1. Introduction of the game:
PewDiePie's Tuber Simulator is a popular mobile game that allows players to experience the life of a YouTuber. Developed by Outerminds Inc., the game captures the essence of PewDiePie's rise to YouTube stardom, providing players with an immersive and entertaining experience.

2. All characters and levels of the game:
In PewDiePie's Tuber Simulator, players have the opportunity to create their own virtual YouTuber character. They can customize their appearance, from clothing and accessories to hairstyles and facial features. As players progress in the game, they can unlock various levels, each offering new challenges and opportunities for growth.

3. What attracts users most to the game:
One of the main attractions of PewDiePie's Tuber Simulator is its ability to simulate the journey of becoming a successful YouTuber. Players can engage in various activities such as recording and editing videos, choosing content genres, and expanding their virtual fan base. The game offers a sense of achievement and accomplishment as players gain subscribers, earn virtual currency, and unlock exciting rewards.

4. Why it is popular:
PewDiePie's Tuber Simulator has gained immense popularity due to its unique concept and its connection to the renowned YouTuber, PewDiePie. The game seamlessly blends addictive gameplay mechanics, striking visuals, and a witty sense of humor, making it highly engaging for players of all ages. Its simple yet addictive nature, combined with the inclusion of real-life YouTube elements, has attracted a massive fan base.

5. When the game was released and how many versions are currently available:
The game was initially released on September 29, 2016, for iOS and Android platforms. Since its launch, PewDiePie's Tuber Simulator has gained significant updates and improvements. Currently, there is one main version available for players to enjoy.

6. The most difficult part of the game:
The most challenging aspect of PewDiePie's Tuber Simulator lies in strategically managing resources, such as virtual currency and time, to maximize growth and progression. Players must carefully prioritize content creation, purchasing upgrades, and attracting subscribers while staying competitive in the virtual world of YouTube.

7. Strengths and weaknesses of the game:
One of the strengths of PewDiePie's Tuber Simulator is its addictive gameplay, which keeps players engaged for hours on end. The game also offers a wide range of customization options, allowing players to personalize their virtual YouTuber experience. However, some players find the game's microtransactions, where real money can be used to purchase in-game currency, as one of its major weaknesses.

8. What other games have been developed by the same developer:
Outerminds Inc., the developer of PewDiePie's Tuber Simulator, has created several other popular games. Notable titles include "PewDiePie: Legend of the Brofist," a side-scrolling action-adventure game, and "Pixelings," a strategic battle game featuring pixelated creatures. The developer's portfolio showcases their ability to create unique and entertaining experiences across various genres.