Donjon
A fantasy-genre RPG with an emphasis on narrative control for the player. It uses a dice-pool system¸ rolling a number of d20s equal to attribute + skill and taking the highest. The GM rolls a number of d20s based on difficulty and the results are compared. Each success lets the player freely declare one statement about the action. For example¸ a successful search for secret doors roll allows the player to define that one is there to be found. - A description from https://darkshire.net/jhkim/rpg/encyclopedia/ with kind permission of John H. Kim