The phrase zadacha na raund comes from Russian and is used online as a short announcement for a new task or round. It spread through TikTok and short form edits where creators needed a quick, recognisable cue to separate setup from action. Tagged in some uploads with the name Kalatai, the clip is shared mainly as a reusable voice line rather than as part of a longer recording. Its popularity comes from its flexibility, fitting quizzes, games, challenges and school style tasks without needing extra explanation for viewers familiar with the format.