1. **Introduction of the Game**
Car Mechanic Simulator 18 invites players to roll up their sleeves and immerse themselves in the world of car repairs and restorations. Developed by PlayWay S.A., this detailed simulation game offers a meticulously crafted experience where enthusiasts can buy, repair, paint, tune, and sell cars. The objective? To work your way up from a small workshop to a top-level car restoration service.

2. **All Characters and Levels of the Game**
Unlike narrative-driven games, Car Mechanic Simulator 18 doesn't feature a cast of characters to interact with. Instead, players themselves are the central character, taking on the role of a mechanic. The game consists of various levels of difficulty, beginning with simple repairs and leading up to full car restorations and complex modifications. Each unlocked level brings more sophisticated tasks and rarer cars to work on.

3. **What Attracts Users Most to the Game**
Players are most often attracted to the game's incredible attention to detail and the satisfaction of turning a rundown clunker into a shiny piece of art. The game's realistic graphics, comprehensive range of tools, and true-to-life car mechanics simulation offer an immersive experience that captivates automobile enthusiasts and casual gamers alike.

4. **Why It Is Popular**
Car Mechanic Simulator 18 gained popularity for its in-depth gameplay, wide variety of cars, and engaging progression system. It's not just a game but an educational tool that teaches the ins and outs of car mechanics. The joy of discovery, the pleasure of customization, and the virtual sense of accomplishment contribute greatly to its popularity.

5. **The Most Difficult Part of the Game**
One of the most challenging aspects of Car Mechanic Simulator 18 is diagnosing complex mechanical issues under a time constraint. As players progress, cars with more obscure and challenging faults appear, demanding keen knowledge and attention to detail to repair without hints effectively.

6. **Strengths and Weaknesses of the Game**
Among its strengths, the game boasts an expansive array of cars and parts, realistic mechanics, and excellent educational value. However, some users may find the game's interface and control system challenging to navigate. Additionally, those looking for action or rapid gameplay might find the pace slower than desired, as it aims for a realistic simulation.

7. **What Other Games Have Been Developed by the Same Developer**
PlayWay S.A. has developed several other simulation games, including the popular game 'House Flipper,' 'Thief Simulator,' and 'The Tenants,' among others. Their catalogue features a variety of immersive experiences, often focusing on detailed simulation and creative problem-solving.