https://www.theguardian.com/technology/article/2024/aug/22/scientists-enable-hydrogel-to-play-and-improve-at-pong-video-game

Researchers say their creation has memory, which it can use to perform better by gaining experience

Researchers have found a soft and squidgy water-rich gel is not only able to play the video game Pong, but gets better at it over time.