It was Metroid's 35th anniversary today (well before midnight it was - ignoring time zones), so I decided to play a bit of the original. I've finished Zero Mission before, but haven't really spent any time on the original game apart from the challenges in NES Remix.
I was going to play the Classic NES release for GBA, but the copy protection kicked in and I couldn't be bothered to fight with it, because I remembered that Zero Mission also has it built in, so played a bit of that on my Game Boy Micro. I know the game's been scaled a bit to fit GBA resolution but it looked good. I got the long beam, morph ball, bombs, about 3 missile expansions and made it past the first lift. Died several times but eh.
I still prefer the more modern Metroid games, but this seems more playable than I expected, could see myself putting more time into it in future.