Psion 3c was what got me into programming! My grandfather gave me his old one when I was a kid. To an 11-year-old, a spreadsheet, world clock, and address book gets old pretty fast :) But the in-built OPL [1] language provided unlimited possibilities. You can see the icon for it in one of the screenshots. I remember printing off a copy of the 300-page language manual I found online (breaking dad’s printer in the proc…
The ability to write the application and then run it on the same mobile device was such a rewarding feedback loop as a kid. There were some pretty good books on OPL in the 90s too.
The standard of the third party gaming ecosystem for the OS (EPOC) was shockingly good for the time as well really, there was an amazing golf game, also written in OPL. That Steve Litchfield name I remember a lot from the era, he was extremely active developing OPL software: