Gacha is a popular mechanic in many mobile games and some console games, inspired by Japanese capsule-toy vending machines. You spend virtual currency (or sometimes real money) to get random virtual items or characters. It's a bit like a lottery or a mystery box—each time you "pull" or "roll," you don't know what you'll get.

Gacha games often feature colorful, engaging designs and can be quite addictive due to the thrill of chance and collecting rare items. They are especially common in Japanese games but have gained global popularity.