Video Games - Gameboy Advance - Yu-Gi-Oh! The Eternal Duelist SoulYou begin with either a red, green, or black Deck. Opponents are arranged in "tiers," with higher tiers unlocked from already open tiers. A tier may consist of 4 or 5 duelists. In order to advance, all duelists on a tier must be beaten a certain amount of times before the next tier can be unlocked. Beating a tier also unlocks certain in-game events, such as special cards that can only be received by beating that tier.
Another important aspect of the game is its in-game calendar. On certain days of the week (not actual days, as the game does not support a real date function) in game, random events may occur, such as receiving a pack of cards in the mail or being challenged to a Match by an opponent. Each time after finishing a duel, the calendar moves on to the next day.
There are 819 different cards in total, counting the Egyptian God cards. The counter in the "Deck Edit" menu counts the total amount of cards collected, including multiple copies of a card you received. You can receive of upwards to 10000+ cards with the counter.
Aside from the above, this game is nearly identical to Yu-Gi-Oh! Worldwide Edition: Stairway to the Destined Duel except that the default animation speed is slower and you have the option of pressing and holding one of the buttons on the game console to speed it up. There are also notably less cards to choose from in comparison to the aforementioned game.