Gacha is a gaming mechanic commonly found in mobile games, where players spend in-game currency or real money to receive random virtual items, characters, or rewards. The term originates from gachapon, a Japanese vending machine that dispenses capsule toys. Players enjoy the thrill of chance, as they may receive rare or powerful items, encouraging continued play and investment. This system often includes various tiers of rarity, with more valuable items being harder to obtain. Gacha mechanics are prevalent in games like Fate/Grand Order and Genshin Impact, where players can collect and upgrade characters to enhance their gaming experience.