Ghost Knight : IDLE RPG is a free simulation game developed by Sour Taste, available on Android. It is an endless training RPG game where you can grow your character by completing various quests, including floor breakthroughs, golem dungeons, and challenge dungeons.

The game features a living sword and shield that you can feed to make them evolve and become more powerful. You can also enhance the unique effect with various activation conditions, ignite the sword, or kill monsters at once. The game also offers various artifacts, necklaces, and rings that are essential items for growth, and infinite quests to help you grow without blockage.

One of the unique features of Ghost Knight : IDLE RPG is that you can grow even offline with a magical golden box that collects goods both online and offline. The game does not have a lottery system for randomly obtaining items, so you don't have to be sad because you're not lucky anymore. Sour Taste is also preparing various updates to make the game more exciting and engaging.