awesome-gbadev

Yeah the GBA uses an older ARM processor and is really well supported by GCC and modern compiler toolchains. Heck you can even write Go and run it with TinyGo targeting the GBA: https://tinygo.org/docs/reference/microcontrollers/gameboy-a... Plain old C/C++ is really well supported for hobbyist development though: https://github.com/gbadev-org/awesome-gbadev

I can't speak to any of the low code approaches, but I do know it wouldn't be that hard for a GBA implementation once you learned the hardware (and the resources for learning it are pretty good). Each hexagon could be its own sprite (probably even with the text on them already, to make it super trivial), and then you can probably just DMA them into the appropriate place in memory during vblank. So then it's just the game state/logic. All of which is pretty straightforward in C, though there is tooling around other languages as well. https://github.com/gbadev-org/awesome-gbadev has a buncha resources, though I can personally attest to Tonc as being everything you need for getting up and running (at least it was years ago when I used it, but the GBA hasn't changed since then; just the tooling and environment may have gotten better)