Flower Smash is an action puzzle game where the player controls a movable figure to defend a central home area from enemies approaching in lines of different colors. The player shoots enemies of the same or different colors to eliminate them or switch colors, with the goal of clearing levels by shooting a certain number of each color before time runs out. As levels progress, more enemy lines are introduced and enemies move faster, increasing the challenge. The game is controlled with a mouse and scored based on enemies eliminated and time remaining.