Knife Cut: Merge Hit is a hypercasual game with merge action. A player is tasked with creating deliciously cool, fresh and sweet fruit juices using various whole apples and other fruits like bananas, oranges and pineapples. To add fruit to the blender, the player must slice it up first. Yet, the player can only guarantee that enough sliced fruit drops into the blender below the bottom of the screen by creating the sharpest tools possible.
The game displays several square cells with rounded corners at the middle of the screen. Some or all cells contain sharp slicing tools, such as kitchen knives, wooden swords and daggers. The player must merge two of the same slicing tools to create new ones. They must sometimes pay to add tools to the cells. When the player is satisfied with their creations, they drop the sharp weapons from the cells down the screen onto the whole fruit. The tools then slice through some or all of the fruit.
Knife Cut: Merge Hit isn't difficult to play. The player receives a goal at the top center of the screen. If they meet the goal, they win the level. The game also supplies them with gift boxes and multipliers to increase their finances. That said, they must watch advertisements to take advantage of these opportunities.