Draw Line is a vertical touch casual mobile game that combines circular swipe controls with rhythm-based charging gameplay. Players simply hold the centre of the windmill and drag their finger clockwise to make the three-blade windmill rotate in sync with their fingertip; every two complete rotations, the outer ring progress bar fills up, condensing a drop of essence and adding it to the score. The screen displays current score, mistakes, and charge percentage in real time, along with pause, restart, and return to main menu options, making each game session clear and compact. The game emphasises 'clockwise only' operation rules: if too many counter-clockwise moves accumulate, they count as mistakes, and three mistakes end the game, testing the player's gesture control and rhythm along with being easy to pick up. Glowing orbs continuously fall from the top funnel, and the glass bottle alongside flashes and charges with each score, creating a visual effect of magical wind refining; the local leaderboard records your highest scores, so you can keep challenging your limits. The rules are simple and feedback is immediate, making it great for quick relaxing play or for carefully honing your control to achieve perfect runs and high scores.