Core Keeper is an indie game developed by Pugstorm and published by Fireshine Games. It was released on March 8, 2022. The game falls into several genres including survival, action, open world, RPG, adventure, casual, and simulation. Players can enjoy Core Keeper in both single-player and multiplayer modes, with support for up to eight players. The game also offers cross-platform play.

Core Keeper allows players to control a character who awakens in an ancient cavern filled with creatures, resources, and relics. The player's goal is to survive by mining resources, building a base, crafting equipment, and powering up the Core.

Players can explore a vast underground cave system that features procedurally generated environments. They will encounter various biomes, fight cavernous creatures, and uncover hidden secrets. The game also includes farming and cooking mechanics.

The main story in Core Keeper takes approximately 24 hours to complete. If players choose to experience the main story and additional content, it will take around 56 hours. A completionist playthrough, which involves completing all aspects of the game, can take up to 195 hours.