Dark Worlds are an archetype that mainly focus on discarding monsters out of your hand to gain their effects. Almost all Dark World monsters have an effect when you discard them with many monsters gaining a second effect if discarded by your opponent's effect. Dark World can be played as an explosive OTK deck or a control based deck with the addition of Loading... and other cards.
If the Yu-Gi-Oh! DB website asks to login with Game Card ID just click "I don't have a game card ID" and fill some basic information to proceed
- Via the MDM extension (Recommended): Download on Firefox, or Chromium Browsers For Chromium browsers (Chrome/Edge/Opera/Brave...etc) just click "Add to chrome" on the store page and it'll work on most if not all chromium browsers. After using the extension, go to the Master Duel game => Main menu => Deck option => The Card database option at the top right corner => locate the deck you exported and copy it