The word “gacha” is pronounced as /ˈɡætʃə/. The “g” is pronounced like the “g” in “go”. The “a” is pronounced as in “cat”. The “ch” is pronounced like the “ch” in “church”. So when you say “gacha”, it should sound like “GAT-chuh”. It is often associated with games that involve a random draw or lottery system. Many mobile games use the gacha mechanic to offer players a chance to obtain rare characters or items.