Hero Wars is a popular mobile and browser-based fantasy role-playing game (RPG) developed by Nexters Global Ltd. The game offers a mix of RPG and strategy elements, where players assemble a team of heroes and engage in battles against various enemies to save the fantasy world from darkness.

Key Features of Hero Wars:

1. Hero Collection: Players can recruit and collect a diverse array of heroes, each with their unique abilities and skills. These heroes are categorized into different classes, such as tanks, support, mages, and more.

2. Team Formation: Building a well-balanced team is crucial for success in Hero Wars. Players can strategically choose their heroes and position them on the battlefield to maximize their strengths and synergies.

3. Role-based Combat: Battles in Hero Wars are turn-based, where heroes take turns to perform their actions based on their initiative and speed attributes. Players must strategize their moves and timing to defeat their opponents effectively.

4. Campaign Mode: The game features an engaging campaign mode with a captivating storyline that unfolds as players progress through various levels and chapters.

5. Tower Challenges: Players can test their team's strength and endurance in tower challenges, where they face a series of increasingly difficult battles.

6. Guilds and Guild Wars: Hero Wars encourages social gameplay through guilds. Players can join or create their own guilds, collaborate with other members, and participate in guild wars and special events.

7. PvP Arena: Players can compete against other players in real-time battles in the PvP Arena to climb the ranks and earn rewards.

8. Events and Special Challenges: The game regularly hosts special events, challenges, and tournaments that offer unique rewards and limited-time heroes.

9. Equipment and Upgrades: Heroes can be equipped with various gear and artifacts to enhance their abilities and attributes. Players can also level up and upgrade their heroes to make them stronger.

10. In-Game Currency: Hero Wars uses different in-game currencies that players can earn through gameplay or purchase through microtransactions. These currencies can be used to acquire heroes, gear, and other resources.

The game's graphics and art style are visually appealing, and its frequent updates and new content keep players engaged and interested in the ongoing adventures. Hero Wars' combination of hero collection, strategic gameplay, and social features have contributed to its popularity and success in the mobile and browser gaming market.