Features

Added the main menu scene.

Added a quit game button actually worked.

Paddles cannot go past the top and bottom walls, and never move sideways, rotate, or get stuck.

The ball increases in speed with each hit and bounces correctly.

The ball resets to the center and starts moving in a random direction every time.

The scoring "system" is triggered by the collider.

Clearly legible scores shown for both players and scores are correctly calculated as the play progresses

When the players win the game, displays the winning message that identifies the winner, and the gameplay ceases.

Added different sound effects when scores-getting and the ball hit the wall and paddle.

Tried to add Computer AI but not succeed.

All art materials drew by myself.