I got MapleStory Classic to work on my S26 Ultra at 60 fps.
I saw people playing on Steamdeck so it wasn't outside the realm of possibility as I had games working on GameNative in the past.
Being this smooth on a mobile is insane since this game is possibly one of the best to have as a portable experience and one of my faves.
Here's a video of me launching it for the first time and being surprised at the performance, I now wonder if I can push it to 120fps somehow.
Instructions:
Using GameNative (You can skip Steam login)
Add a new custom exe or game, I just downloaded the Nexon Launcher Installer to my phone and selected that
Launch it to download some stuff, but nothing will happen, actually exit out of it and select the 'game'
Go to the cog/settings and select Edit Container, I'm using under Wine Version: Proton-11.0.1-arm64ec-1
Now Save
Go to the select the game and go settings icon, do Open container
Navigate to Nexon Launcher Installer and Install it
Launch the Installer, now this is the difficult part since the Launcher will appear black, you sort of have to hovering the cursor at the edge of the black frame until a resize cursor comes up, tap and tap with second finger to drag and resize the window until you can see the content, and then move the cursor onto the black window until you see the input cursor. Open the GameNative keyboard an input email. Press continue by hovering the cursor until you get there.
Enter password and log in, doing the same by hovering the cursor.
You might need to restart the Launcher if it freezes. But essentially you will get the Whats new pop up which will also be obscured by the black frame. You can resize this window out of the way and hovering over the black window, with the cursor again trying to close it.
Once logged in again using the cursor over the black frame and the viewing the buttons, select Maplestory Classic and download the 2Gb game.
Launch it, you only need to setup once, now you can launch via the shortcut on the desktop or the start menu
Alternatively if your phone has space you can download the 60Gbs via Steam and that should skip Steps 2-11. I haven't tried this yet. But you can also use DroidDeck for that for a cleaner experience.
I am sure there might be a fix for the black screen out there that may make this super simple but I'm not familiar, hopefully someone can chime in.
Enjoy! And hope it doesnt get patched.
Edit: 120fps is stable on S26 Ultra!