My 9 year old is doing a game dev course in town where they use the BBC Micro Bit, a retro arcade peripheral (buttons, screen, sound, handheld), and some Microsoft game dev IDE. It’s incredibly compelling and feels a lot like this. But less than 1/3 the price and much more extensible and well-featured (the screen is colour!). I’m not sure I really see the value of the Playdate.