**1. Introduction of the game**
Welcome to the world of "Age of Z Origins," a thrilling mobile strategy game where players navigate through a post-apocalyptic landscape overrun by hordes of zombies. In this unforgiving environment, your mission is to survive, build, and lead humanity's last stand against the undead. Command your armies, fortify your city, and forge alliances with other survivors to wipe out the zombie threat and reclaim the future for the living.

**2. All characters and levels of the game**
In "Age of Z Origins," players will not discover unique characters in a traditional sense but will instead take on the role of a commander leading their city. As you progress, you will encounter different levels that challenge your strategic prowess, ranging from basic survival to large-scale warfare and alliance-driven conquests. Each level presents new challenges and opportunities to expand your dominion and enhance your city's defenses, technology, and military might.

**3. What attracts users most to the game**
The game's most attractive features include its stunning 3D graphics, which bring the desolate and dangerous world to life. Additionally, the strategic depth, allowing for various playstyles from focused base-building to aggressive conquest, appeals to strategy enthusiasts. The social aspect is also a big draw, as it encourages forming strong alliances and engaging in epic cooperative gameplay to tackle formidable zombie waves and rival factions.

**4. Why it is popular**
"Age of Z Origins" has gained popularity due to its immersive world, the satisfaction of building and managing a city in a post-apocalyptic setting, and the continuous updates and events that keep the gameplay fresh and engaging. The mix of strategy, tower defense, and exploration elements come together to offer an addictive gameplay experience that resonates with a wide audience.

**5. The most difficult part of the game**
One of the most challenging aspects of "Age of Z Origins" is the need for strategic alliance-building and coordination during large-scale battles. Players must not only manage their resources and troops effectively but also work in concert with allies to plan and execute strategies against both the zombie hordes and rival player factions. Balancing offense and defense while dealing with dynamic, real-time threats can be quite daunting.

**6. Strengths and weaknesses of the game**
Strengths of "Age of Z Origins" include its strategic depth, the rich post-apocalyptic setting, and the strong community aspect of the game. One weakness, however, may be the steep learning curve for new players and the potential for "pay-to-win" dynamics, which is a common issue in many free-to-play mobile games that can lead to imbalances between paying and non-paying players.

**7. What other games have been developed by the same developer**
"Age of Z Origins" was developed by Camel Games Limited. They are also known for developing other strategy games, including "Titan Throne" and "War and Order," which share similar mechanics of building, alliance, and realm strategy elements.