- Worlds
"Worlds" are the playable factions in Future Card Buddyfight.
Comparable to Magic: the Gathering's colors and Cardfight Vanguard's clans, worlds divide the cards into groups based on mechanical and artistic themes, each World has its own artistic themes and playstyles (Example: Dragon World is themed after dragonic creatures and has many abilities that destroy opponent monsters).
Flag cards determine which World(s) you may use, because of that, it is recommended that your deck only includes cards from the Worlds listed in your Flag card (note that you can include cards from different Worlds, but they may not be used.).
