Never played this before. You don't need a modded Switch for this. This is the official version which now supports many mods that can be downloaded free in the add-on menu.
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https://www.youtube.com/watch?v=EasVho9SuBA
I can't record sideloaded apps normally because Oculus doesn't let you so heres a through the lense video.
In order to get the best performance you have to use sidequest and set the performance to level 4 or it will lag.
Files I used with mame 2003 plus core in retroarch:
https://drive.google.com/file/d/1rvPaQtCXaycHayjjrH1mh7slUBUFKU6p/view
Includes KI 1 & 2
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https://www.youtube.com/watch?v=-RKKTo10_wk