As players will notice when picking a Leader before starting a Civ 7 game, each Leader has two Mementos slots. To use Mementos in Civilization 7, gamers must first unlock these slots so they can place a Memento that matches the strategy they want to go for.

In Civilization 7, players earn Mementos as they progress through the game, leveling up their leaders and making strides down their Foundation Path. You'll gain both your slots quite early: at Level 3 and Level 5.

The leader Attribute Tree is one of the most important - and game-changing - aspects of Civilization 7. You will progress through the attribute trees of your choosing by picking your mementos at the start of the game,