20Q

The 20Q handheld was a consumer adaptation of the "20Q" neural-net AI experiment created by Robin Burgener, who wrote the original program in 1988 (passed around on floppy disks) and later put the game online in the mid-1990s. Radica released the palm-sized plastic orb around 2003–2004, turning the concept into an electronic toy. The toy featured a small screen and simple interface: you thought of an object (anything from tangible things to abstract concepts), and the handheld asked up to twenty yes/no/sometimes questions before making a guess. Its uncanny accuracy at narrowing down the target made it feel like the toy could truly read minds, creating a sense of wonder and frustration in equal measure.

The 20Q became a surprise hit and achieved peak popularity as a holiday must-have gift by 2005. The toy's appeal lay in its perfect balance of simplicity and apparent intelligence — it used actual machine learning principles, making it feel genuinely futuristic compared to other handheld games of the era. Its blend of intellectual challenge and slightly creepy AI magic made it a memorable fixture of mid-2000s gift-giving and playground trading.