Mega Plinko is a physics-based puzzle game where the objective is to direct balls through a series of obstacles in order to reach specific targets. The game features a variety of pathways for the balls to follow, including sticks that influence their direction, holes that capture them, and fans that randomly scatter them. Players must carefully design a path to optimize the trajectory of the balls as they fall through the grid.

At the bottom of the screen, a truck is positioned to collect the balls. Different trucks are available, and the player aims to guide the balls into the correct trucks. The challenge lies in manipulating the obstacles, adjusting the path, and selecting the right trucks to increase the chances of success. The game introduces a strategic layer by allowing players to choose between using larger balls, which offer higher rewards but increase the difficulty, or smaller balls, which provide more chances to succeed but yield fewer points.

The game also incorporates a mechanic where players can interact with various marked pickups to enhance their gameplay, affecting the ball's behavior as it falls. This adds an additional layer of strategy, as players need to balance the placement of their balls with the pickups to maximize the number of successful drops.