This is a simulation of the 1972 Atari game Pong at a circuit level. The original Pong did not have
any code or even a microprocessor. It was a circuit,
implemented mostly using digital logic chips, with a few timers and other
analog components.

• Clock Generator
• Drawing the Net
• Paddle Positioning
• Drawing the Paddles
• Drawing the Score
• The Ball
• Horizontal Ball Control
• Vertical Ball Control
• Playing The Game (Vertical Only)
• Score Counters
• Game Logic
• Serve Timer
• Score/Miss Sound
• Hit Sound
• Top/Bottom Bounce Sound

Here is a link to full schematics.
Thanks to whoever made this. I just found a few issues with it.
The CLK input to the 7474 on page 2 should be HRESET, not CLK. Pin 5 of the 555’s on pages 5 and 6 should be connected
to the capacitor. Also some of the nodes are inconsistently labeled.

Als