The June Amazon Prime Gaming free games include Far Cry 4 and Escape from Monkey Island, along with packs for Roblox, Apex Legends, FIFA 22, and Pokémon GO
Secret Packs are the much cost-effective and easiest way to obtain powerful yet high rarity cards in Yu-Gi-Oh! Master Duel. But in order to obtain them, they will need to unlock them first by having the keys that they have got from opening regular card packs.