Gog and Magog -The Last Bastion- is a turn-based card game played between two opponents or two teams. Players have the option to select from two game modes: Destiny Mode and Free Will Mode. Additionally, players can agree upon playing with or without a time limit per round, opting for either the 30-second or 60-second Sand Timer per game round.

Each player is dealt a pre-constructed deck of 150 cards, resulting in a total of 300 cards in the game. At the beginning of the game, players draw 5 cards at random from their deck and start with 30 energy tokens and no mana. Each turn, players draw a card from their 150-card deck, which has been shifted.

Using pre-constructed decks of 150 cards each, there are a total of 300 cards in the game. Players select 50 principal cards that will serve as the main cards for the game, ensuring they do not choose the same creature card twice. They shuffle their deck of 50 cards and randomly draw five cards from it to begin the game, having 30 energy tokens and no mana. If the 50 selected cards are exhausted, players continue by drawing 50 more cards from the remaining 100 cards.