Game File: 

metapong.zip

It's pong, except the ball contains a second game of pong. Scoring a goal in either game awards you a point and resets that ball only. First to ten wins. The outer layer has a few special rules (can influence the ball's path by hitting it with a moving paddle, and the ball's velocity increases with every paddle hit up to a maximum speed) that the inner layer does not. Note that the two games aren't one-to-one representations of each other and very quickly get de-synced.

Not entirely sure if I played a game like this before. Was fun to make regardless.

Controls:
Player 1: W/S
Player 2: Up/Down

Edit: Fixed a silly bounds error that prevented the inner paddles and ball from moving in the entire outer ball.