The remake of the original Metroid game, Metroid Zero Mission, is heading to the Nintendo Switch Online service at some point and a dataminer recently discovered some images from within the Nintendo Switch Online Game Boy Advance app. Interestingly, the screenshots show the game’s link functionality. If you linked Metroid Fusion to the GameCube with Metroid Prime you unlocked the Fusion suit in-game. Whether Nintendo is planning anything with the link functionality remains to be seen. Metroid Fusion recently joined the Game Boy Advance catalogue in the Nintendo Switch Online app for higher-tier Expansion Pack members.
Metroid: Zero Mission screens found in GBA Switch Online with link functionality

Stop! Nintendo, stop doing this stupid things :(
I no problem Pay 60eur for 25yo gba games with this quality but..
For mine money i need cartridge and plastic case! Or 20eur for one time Pay for digital download.
But never i pay monthly for service only!!!
So like, is something like this going to be part of a big announcement for a later day? Because having link cable, transfer pak, and GBA GameCube link cable emulation would be huge, but my hopes have been lowered when nothing about it was said on Pokemon day.
Got my Analogue Pocket repaired last week and Zero Mission is the first game I’ve been playing on it :D