1. **Introduction of the game:**
Toca Life World is an imaginative and open-ended play experience designed for children, offering a vibrant digital universe where players can create and act out their own stories. Developed by Toca Boca, the game encourages exploration and creativity, allowing kids to interact with characters and environments in a way that mimics real-life scenarios, storytelling, and role-play.

2. **All characters and levels of the game:**
The game boasts a diverse cast of characters that players can move and interact with across various levels and locations. This extensive universe encompasses everything from bustling cityscapes and peaceful countryside settings to mystical lands and underwater worlds. Each character and level is designed with unique traits and scenarios, providing endless possibilities for adventure and storytelling.

3. **What attracts users most to the game:**
Users are most attracted to Toca Life World's limitless creative possibilities and the freedom it gives players to craft their own stories without the constraints of fixed objectives or goals. The child-friendly interface, engaging animations, and the sheer diversity of characters and settings keep players engaged and returning for more. The ability to mix and match locations and characters from other Toca Life games also adds to its charm.

4. **Why it is popular:**
Its popularity stems from Toca Life World's position as a canvas for a child’s imagination. The game's inclusive and non-competitive nature appeals to both parents and children looking for an entertainment platform that promotes creativity, learning, and fun without the pressures of in-game purchases.

5. **The most difficult part of the game:**
As a game built on free exploration and creative play, Toca Life World does not present traditional gaming challenges or difficult parts that other games might. However, the challenge for players might lie in managing the vast variety of items and characters while effectively using them to construct complex narratives or scenes.

6. **Strengths and weaknesses of the game:**
The game’s strengths are its child-friendly content, educational value, creativity encouragement, and ad-free, safe environment. However, one potential weakness could be the overwhelming choice for younger children or a possible reliance on parents to purchase new in-game content to expand the experience further.

7. **What other games have been developed by the same developer:**
Toca Boca, the developer behind Toca Life World, has created numerous games within the Toca Life series including Toca Life: City, Toca Life: Vacation, Toca Life: Hospital, and more. They also have a wider range of child-friendly games such as Toca Kitchen, Toca Hair Salon, and Toca Nature, all of which foster creative play and exploration.