Feels like we've been getting a lot more fantasy-console-style frameworks/engines lately and I've gotta say I'm all for it. Not sure this one is for me, but love to see it regardless!
I'm working on a game at the moment which is inspired by old ZX Spectrum games, so sadly that rules PICO-8 out (different colour palettes), but otherwise those limitations make the whole thing really nice
If you just want the "best" one (obviously very subjective, but its the easiest answer), try Pico8