Something suddenly hits my memory and it bugs to not be able to find it on Google (idk the right term to use on search).

When I was very young (probably in 1999 - 2003), I had this handheld gaming console (I had 2 actually, they looked entirely different but used the same concept) that had games in purely black and white big pixels. The pixels look like the screen of those old calculators (it will change color if you press hard with your fingers on the display screen). My parents called it “dit dit gei” in Cantonese. Everything is B&W, made up of huge pixels and the mechanics are even simpler than 1st gen gameboy.

Notable games I can remember include tetris, and one you evade incoming cars from top, and one you shoot bullets from a tank to other tanks until a boss battle with giant tank.

I think they’re probably not from big brands like Nintendo, but anyone here played this thing before? I would love to know what it’s called so that I can watch game runs of it on YouTube (if someone made it).

Sorry I have no photos to jog your memory, but I can draw something out if you need me to. Hope someone here played the same type of console before.

Solved! If anyone’s interested, the keyword is “brick game”! I’ll start my search from there.

Can checkout play.date too, looks similar to what you're looking for