Heroes Battle: Auto-battler is a free-to-play game developed by ChimpWorks for Android 9.0 devices. It is an idle RPG turn-based fighting game that offers a unique merge and upgrade experience. In this game, players must choose their heroes from a pool of over 30 different characters, including medieval, modern, and superhero legends, and form a team to fight against evil in different worlds.

The game offers multiple game modes, including campaign mode and PvP battles, where players can compete against each other to reach the top of the Arena. In each epic battle world, players can choose between one-on-one turn-based fighting or Auto chess fighting mode to defeat their opponents and save the realms from getting corrupt with evil and malice. Overall, Heroes Battle: Auto-battler is one of the best merge and upgrade games available online, providing players with a challenging and exciting gameplay experience.