I've got the game working via undertale and layeredfs. Will update this section with more information soon. Here's video proof
Could I possibly get a MOD to MERGE this with one of the other game maker studio threads? Would like to keep all the GMS2 information together & this pertains to all GMS2 games
*edit by Cyan: Done*
Ok so here is the proper way to make game maker studio games work on the switch via undertale and layeredfs.
Game.win/data.win isnt the only file that needs copied over to the switch. Lots of games will crash if you don't copy over all game data files, with the exception of exe and dll, these are not needed. Some games that work by using only data.win are not taking advantage of the games full assets. For example, data.win does not contain the games soundtrack, so no soundtrack will be played without using the audio ogg files via layeredfs
The above method is not how I made AM2R work. I downloaded all of the following, reverse engineered source files for AM2R, AM2R 1.1 archived file, 1.1 to 1.4 autopatcher, GMXdataSync. I patched the AM2R 1.1 archive with the update auto patcher. I then extracted data.win & placed it in the source files folder, I then proceeded to drop that data.win in GMXdataSync. GMXdataSync outputs all the AM2R assets from data.win and places them in the source files folder. Opened up GMS2, went to import, pointed it towards the gmx file. After it imported, I exported it as an archive. Once compiled I extracted that archive to a folder that I named AM2RNX. I took the data.win from the AM2RNX folder and placed it on my desktop for a minute as a safe place. I then extracted the AM2R 1.1 archive to the AM2RNX folder and allowed it to overwrite all files with the same name. I then took the data.win from the desktop, dropped it back in the AM2RNX folder and allowed it to overwrite the AM2R 1.1 data.win. Copied all the files over to the nintendo switch and it worked. I then proceeded to use NXShell to move files out of the layeredfs folder until the game would instant crash. I honestly do not know if you can just copy the contents of a AM2R 1.1 patched to 1.4 archives contents over to the switch without running them through all of the steps I took because I did not know LANG folder & contents were needed.