In Only One Collection, your goal is to collect magical ingredients by drawing cards from the deck, and placing them into a column for players to choose. Each turn you have a choice either to draw and place a new ingredients card (explore action) or to take the previously explored ingredients (collect action).
Although you want to collect as many ingredients as possible, you must follow the “Only One” rule because breaking the rule will release a magical spell that will ruin the explored ingredients! You need to weigh the risk between pushing your luck and exploring for more, or staying safe and collecting what has already been explored.
Crafting valuable magical potions by collecting these “Only One” ingredients will earn you victory points. At the end of the game, the player with the most victory points will be the winner!