**1. Introduction of the game:**
The Sims Mobile brings the beloved life-simulation game directly to your mobile devices, allowing players to create and control their own Sims in a virtual world. With the touch of a finger, users can customize their characters, build their dream homes, and shape their Sim's life stories. Rich with detail and options, players can engage in everyday activities, embark on careers, develop relationships, and strive to fulfill their Sims’ aspirations.

**2. All characters and levels of the game:**
In The Sims Mobile, players do not progress through levels in the traditional gaming sense but rather advance through different stages of their Sim’s lives, from starting out as young adults to growing into seniors. Characters, referred to as Sims, can be extensively customized, including their appearance, outfits, personality traits, and life goals. Players build their family trees through generations, affecting future Sims’ lives and stories.

**3. What attracts users most to the game:**
The game’s attractiveness lies in its open-ended gameplay and the vast personalization it offers, providing an individualized experience where every action can lead to a multitude of outcomes. The familiar yet always unique storytelling capabilities and the social interaction with other players' Sims through parties and relationships keep users engaged and coming back for more.

**4. Why it is popular:**
The Sims Mobile has garnered popularity due to its comprehensive simulation of life’s joys and challenges, simplified for on-the-go play. Its legacy, originating from The Sims series, its accessibility on mobile platforms, and the ease with which players can live out fantasy lives and create personalized narratives contribute to its widespread appeal.

**5. The most difficult part of the game:**
Some players find managing their Sim’s needs and balancing their careers, relationships, and hobbies to be challenging. Additionally, unlocking certain items and features without in-app purchases can be time-consuming, requiring diligent play and resource management.

**6. Strengths and weaknesses of the game:**
Strengths of The Sims Mobile include its impressive customization options, the depth of its life simulation, and the social aspects of interacting with friends. On the downside, some users may find the game’s progression slow without spending real money, and the limited action energy can be a frustration, restraining continuous play.

**7. What other games have been developed by the same developer:**
The Sims Mobile was developed by Maxis and Firemonkeys Studios, under the publishing banner of Electronic Arts (EA). Maxis is renowned for creating the original The Sims games for PC, as well as the SimCity series, while Firemonkeys Studios, an EA studio based in Australia, is known for other mobile hits like Real Racing 3 and Need for Speed: No Limits.