The game is Metroid Zero Mission, this is the first time I beat a Metroid game, so I decided to start with this one.
I should mention that I used save states and rewind to get the hardest items, but hey, I don't have the time to master all the games I play ¯_(ツ)_/¯
I've beaten most of the older Pokemon games, DS and 3DS included, all on the SteamDeck.
I put ~40 hours into Pokemon Unbound (FANTASTIC Pokemon game, I highly recommend it!!!), and beaten it. I've also recently gotten the Pokemon Sword and Shield Ultimate Plus rom hack downloaded, and will play through that once I finish the other mainline games. I might make a pitstop into Pokemon Emerald Seaglass, as I just ADORE the art style of that game.
DefJam Fight for NY, King's Field 4, Custom Robo, Legend of Zelda Minish Cap, Legend of Zelda A Link to the Past, Legend of Zelda Oracle Series. All of them beaten on the SteamDeck, with achievements from RetroAchivements!
I have never been as happy as I am with the SteamDeck. Fantastic retro gaming device! :)
How are you playing Nintendo games on a steam deck?
Emulators that were installed through Emudeck!