The "Pong 2D" game is a simple yet innovative concept where the gameplay involves moving obstacles that increase the challenge as you play. The number of balls increases over time, making the game faster and more difficult. It also features visual effects that change with each round, adding variety to the atmosphere. The controls are simple, with the player moving the paddle left or right, and having the ability to bend it to change the ball's direction. The goal of the game is to collect as many points as possible while the difficulty increases over time.