**1. Introduction of the game:**
Blades of Brim is an action-packed endless runner game developed by SYBO Games, the creators of the renowned Subway Surfers. Set in a mythical world, the game tasks players with navigating through a vibrant landscape filled with fantastical creatures, obstacles, and treasures. The unique blend of running, jumping, and battling enemies with an array of weapons and magical powers sets Blades of Brim apart from conventional runner games, creating a dynamic and engaging experience.

**2. All characters and levels of the game:**
Blades of Brim features a diverse cast of characters, each with their own unique abilities and weapons, which players can unlock and upgrade as they progress. These characters run through various levels that represent different parts of the Brim kingdom, from enchanted forests to frosty cliffs, all portrayed with a distinct aesthetic and design. The multilayered environments are filled with hidden paths and secrets that add depth to the traditional running formula.

**3. What attracts users most to the game:**
Players are often attracted to Blades of Brim for its immersive 3D graphics, seamless animation, and the satisfaction of mastering the combat system. The game's simple swipe controls are easy to learn but challenging to master. Furthermore, the integration of the running and combat mechanics offers a more interactive and rewarding experience than the typical runner game.

**4. Why it is popular:**
Blades of Brim's popularity can be attributed to its addictive gameplay loop, regular content updates, and the reputation of its developer, SYBO Games. The game retains the casual ease of play found in Subway Surfers but adds layers of depth with RPG elements, making it appealing to a wide range of players looking for more than just an endless run.

**5. When the game was released and how many versions are currently available:**
Blades of Brim was released in June 2015. Since then, the game has gone through multiple updates to refine gameplay, add new characters and levels, and improve the overall user experience. The current state of the game reflects these continuous improvements, although the exact number of versions can vary due to iterative updates and changes.

**6. The most difficult part of the game:**
One of the most challenging aspects of Blades of Brim is the progression of difficulty as players advance. Enemies become tougher, and the game speeds up, requiring quick reflexes and strategic use of characters and their abilities. Mastering the timing for attacks and avoiding obstacles while maintaining speed can be particularly difficult for new players.

**7. Strengths and weaknesses of the game:**
Blades of Brim's strengths lie in its engaging gameplay, excellent design, and character variety that offers replayability. The seamless integration of combat with running is a standout feature. However, its weaknesses may include the potential for repetitive play and the reliance on in-app purchases for quicker progression, which might deter some players.

**8. What other games have been developed by the same developer:**
SYBO Games is best known for Subway Surfers, one of the most downloaded mobile games in the world. While Subway Surfers remains their flagship title, SYBO has continued to develop and nurture Blades of Brim as well as working on new projects and games that maintain their engaging, accessible gameplay philosophy.