RP2040 Doom
Fun stuff, it always amazes me that people are surprised. Not having lived through it is a part of that I'm sure.The RP2040 is more powerful than an 80286. The PC/AT which was hugely more powerful than the original IBM PC (on which DOOM also ran). Put a keyboard, mouse, and an frame buffer on an STM32F4 or F7 and you've got the computational and capability equivalent of the PC's that powered the world in 1985. People did accounting, CAD, spreadsheets, email, all sorts of things on them. Amazing I know, but here we are.