1. Introduction of the game:
Welcome to the enchanting world of ドラゴンクエストライバルズ (Dragon Quest Rivals), a thrilling and strategic digital trading card game. Immerse yourself in the beloved Dragon Quest universe, where fierce battles between iconic characters unfold in a strategic card-based gameplay.

2. All characters and levels of the game:
Dragon Quest Rivals features an extensive roster of characters from the rich Dragon Quest franchise. From brave heroes like the Luminary and Erdrick, to fierce monsters such as Slimes and Metal Kings, players can collect and strategically combine their favorite characters to create powerful decks. Explore various levels inspired by memorable locations from the series, including the bustling cities, treacherous dungeons, and epic landscapes.

3. What attracts users most to the game:
The game's captivating blend of strategic card battles and nostalgia for the Dragon Quest universe is one of its biggest attractions. Players can experience the joy of discovering and collecting their favorite Dragon Quest heroes and monsters, then strategically building decks to defeat their opponents. The game also offers a competitive multiplayer mode, allowing players to challenge friends and other players from around the world.

4. Why it is popular:
Dragon Quest Rivals has gained popularity for several reasons. Given the immense popularity of the Dragon Quest series in Japan and worldwide, the game appeals to both new and longtime fans of the franchise. Its strategic depth, coupled with the thrill of collecting and upgrading cards, keeps players engaged for hours. Regular updates and events provide fresh content, ensuring that players always have something new to explore.

5. When the game was released and how many versions are currently available:
Dragon Quest Rivals was initially released in Japan on November 2, 2017, for iOS and Android devices. As of now, the game has multiple versions available, incorporating expansions and updates that introduce new cards, characters, and levels, ensuring a continuous evolution of gameplay.

6. The most difficult part of the game:
One of the most challenging aspects of Dragon Quest Rivals lies in the strategic decision-making during battles. With a vast array of cards and unique abilities at their disposal, players must carefully plan their moves to anticipate and counter their opponent's tactics. Crafting a winning strategy while adapting to the ever-changing battlefield can test even the most seasoned players' skills.

7. Strengths and weaknesses of the game:
Dragon Quest Rivals boasts several strengths, including its visually appealing artwork, deep lore from the Dragon Quest franchise, and its engaging and strategic card gameplay. The game's weaknesses, however, lie in its heavy reliance on luck, as card draw can heavily influence battles, and the limited availability of certain powerful cards, which may lead to imbalance in the competitive scene.

8. What other games have been developed by the same developer:
The game is developed by Square Enix Co., Ltd., a renowned video game developer known for creating iconic franchises. Square Enix has developed numerous critically acclaimed games, including the Final Fantasy series, Dragon Quest series, Kingdom Hearts series, and many others, making them a powerhouse in the gaming industry.