Collection games focus on the satisfying pursuit of gathering items, treasures, and collectibles across varied gameplay environments. Each level or area presents objects scattered throughout that must be found, earned, or unlocked through exploration and skill. Some collection games embed gathering into platforming challenges - navigate obstacles to reach coins, gems, or stars placed in difficult-to-reach locations. Others frame collection within adventure settings where exploring environments reveals hidden treasures. Completionist-friendly collection games track your progress toward gathering every single item, providing immense satisfaction when you achieve one hundred percent completion. Many collection games feature catalogs or albums that display your gathered items, creating a visual record of your achievements. Card collection games build decks from randomized packs. Creature collection games challenge you to find and capture every species. The collection mechanic taps into a fundamental human drive to accumulate and complete sets.