Vertical Arcade Rom Pack [verified]
I’ve also included a simple vertical_layout.cfg for RetroArch that maps controls logically for vertical play (jump = left button, fire = right, etc.).
If you're referring to a specific, well-known collection, you might use: vertical arcade rom pack
: While not purely vertical, this popular "best-of" set from Internet Archive includes many essential vertical titles like Pac-Man and Galaga . I’ve also included a simple vertical_layout