Help installing Metal Slug arcade ROM on Steam Deck? 🙏

Hey guys,

Been trying to get Metal Slug (the arcade version — the one that uses tokens/coins) running on my Steam Deck but no luck so far. 😞 I’ve got the ROM, tried a few emulators like RetroArch with FinalBurn Neo and MAME cores, but it keeps giving me an error and won’t load.

I just wanna play it so bad — anyone here got it working? Or maybe have a link to a good guide or video on how to install/play Metal Slug arcade ROMs on the Deck?

Would really appreciate any help! Thanks in advance 🙏