The Memoria system in Dissidia Duellum Final Fantasy is narrative-based collectibles that display key events or memorable scenes from previous Final Fantasy titles.

The Memoria system plays a crucial role in enhancing and customizing your characters as follows:

• Stat Modifiers: Equipping Memoria to a character grants bonus stats, allowing players to fine-tune builds to fit their strategy or playstyle.
• Examples of stat boosts: Memoria can increase movement speed or critical hit chance, among other attributes.
• Collection from main series: Players can collect Memoria from other Final Fantasy titles to strengthen their "Ghosts" or heroes in the team.
• Enhanced gameplay experience: Beyond combat boosts, collecting Memoria allows players to relive iconic scenes and deepen their experience with the Final Fantasy series lore.

In summary, Memoria is a horizontal progression system that provides diverse character customization options, giving your team a competitive edge in 3v3 battles.