KeyForge is a card game designed by Richard Garfield and published by Ghost Galaxy. It was released in 2018 and was originally published by Fantasy Flight Games.

KeyForge is a two-player game, with each player using a single deck of cards to play creatures, artifacts, actions, and upgrades. The game's aim is to gather enough Æmber (pronounced "amber") to forge three keys before the opponent does the same. Creatures can collect Æmber and fight one another, while artifacts provide unique effects. Actions are used and discarded, and upgrades are attached to creatures to improve their abilities.