Very long-time lurker here; I made an account specifically to say what I am about to say:
I am so sick of gameboy-style devices only ever having two buttons without a start, select or literally anything else.
Playdate did the same thing and it makes games really super infuriating because nobody wants to perform a hadouken just to open a gosh-darn pause menu.
I'm exaggerating of course but good lord please just give me a dedicated pause button.
What? Playdate absolutely has a menu button.
I don't think this is for gaming. It has arrows plus two buttons, probably for conceptual equivalents to "tap/click/enter" and "back/escape".
If you want a DIYish handheld for gaming there are much better options on the market.