Quite the hassle it seems… https://www.reddit.com/r/ftlgame/comments/xlztak/ftl_multiverse_on_steam_deck/

FTL multiverse is a must. It has much more variety and chances to equip yourself for the final boss, removing much of the randomness of being able to win.

Edit: it has a system requirements spike on the original…I dont know what exactly it needs, but my shitty backup laptop doesnt have enough memory for it while the original works fine.