Fill The Bottle

Fill The Bottle is a digital puzzle game developed by a small independent studio, first released in 2023 for mobile platforms. The game presents a series of physics-based challenges centered on the transfer of colored liquids between containers. Each level features a set of empty bottles, a source of liquid, and a target bottle that must be filled to a specific line. The primary objective is to achieve the exact fill level without spilling or exceeding the mark. The game employs a realistic fluid simulation engine, where liquid behaves according to gravity, viscosity, and surface tension. Levels increase in complexity by introducing multiple colors, narrow-necked bottles, and obstacles such as rotating platforms or movable barriers. The visual design is minimalist, with a clean white background and brightly colored liquids. No narrative or characters are present; the game focuses purely on spatial reasoning and precision. The difficulty curve is gradual, with early levels serving as tutorials for basic pouring mechanics, while later stages require sequential planning and angle manipulation. The game includes a level editor, allowing players to create and share custom puzzles. A scoring system tracks the number of attempts per level, encouraging efficiency. The game is available for free with optional in-app purchases to remove advertisements or unlock hint systems.

Gameplay and controls are based on direct touch interaction. The player controls a single bottle at a time by tapping and dragging it across the screen. To pour liquid, the player tilts the bottle by dragging a finger in an arc, simulating the physical act of tipping. The angle of tilt determines the flow rate and direction of the liquid stream. The player must align the bottle's opening with the target bottle's neck to transfer liquid. A visible fill line on the target bottle indicates the required volume. Overfilling or spilling liquid outside the bottle results in a failed attempt, requiring a level restart. The player can also rotate the bottle 360 degrees by swiping in a circular motion, useful for accessing narrow openings. A pause button in the upper corner allows the player to reset the level or access settings. The interface includes a level select screen with a grid of numbered stages, each showing a star rating based on completion efficiency. No timers or pressure mechanics are present; the player can take unlimited time to plan each pour. The game provides haptic feedback on mobile devices to indicate successful liquid transfer or collision with obstacles. The control scheme is designed for one-handed operation, with all actions performed via a single finger.