Meet Konami’s official Yu-Gi-Oh! Simulator (currently in Open Beta). However, at current, it appears to be limited to TCG Territories.
It’s an automated simulator in the vein of Duel Carnival or Tag Force
The Game sets you up against Yami Yugi and Jaden and other characters to learn how to Duel
You can buy packs using DP and Coins. It’s likely Free to Play, but Pay to Progress.
Pack contents appear to be TCG based.
You can recruit partners such as Yugi Muto or Harpie Girl, and play with their Decks. Though you will need to pay in Coins to get stronger partners.
The game limits how many times a Day you can Duel, unless you pay more.
There’s also a Card Encyclopedia that includes 5948 cards in its data banks, which links to the official Konami Database.