Ending Days is a free-to-play rogue-like RPG available on Android, where players embark on a challenging journey with the ancient guardian Eco. Set in a world where humanity has become extinct, players must navigate randomly generated maps to battle evil monsters and ultimately confront Satan. The game features a unique mechanic where players can form a party of two characters, strategizing through various combat and exploration scenarios, while also collecting items and support from influential figures in the game. As players face defeat, they can return to the past, learning from their experiences to build a stronger party for future attempts.

The gameplay is designed to be accessible yet demanding, requiring players to make tactical decisions regarding equipment, character selection, and dungeon conquests. Each adventure offers new challenges and opportunities, with the ability to earn gold and unlock items even after defeat. The inclusion of the Chronochest adds an element of surprise, providing players with random rewards that enhance their gameplay experience. With ongoing updates promising new characters and content, Ending Days invites players to create their ideal party and strive for the ultimate goal of saving the world.