I just built this set yesterday and was thinking to myself 'I wonder how hard it would be to turn this into a functioning gameboy?'
Looks like I have my answer!
There's a replacement motherboard which uses an FPGA in lieu of an original GB/GBC/SGB SoC, so you can in fact build a Gameboy of Theseus with zero Nintendo parts.
I love projects like this where you have to work around constraints like the Lego form factor and the support electronics for the CPU. In terms of modern hardware, the PCB is surprisingly sparse - using modern surface-mount components really helps.
The super detailed silkscreen on the Nintendo PCB does make me wish for the time when all products came with schematics and component specifications...
I think tons of HN tech people are into LEGO. After they gathered 10,000 votes and still declined to do a JWST telescope TWICE, I personally decided to have some fun with it on my own.
Yeah - technical people in general - it was a great introduction to following instructions and creativity all-in-one. (I would build every kit first with the instructions, then tear them apart and put the bricks in the "big" (actually very tiny) box, and from then on, build my own creations - no models sitting on shelves for me - this still happens to-this-day, but now I build with my grandkids)
beyond the other explanations that some have given, lego direct order releases ship from more than one warehouse, even in the US - my bricklink western train set shipped from Vegas, and others I had chatted with either got them 3-4 days earlier than me or 3-4 days later, depending on how close they were to the warehouse and the order of the orders going out.
Was so disappointed when I realized it wasn’t a real gameboy, but then I realized someone even more of a nerd than me would take care of that and I’d just have to be patient. Only took a few days!