Um Jammer Lammy Now1999

Um Jammer Lammy Now!, also known as simply the Um Jammer Lammy Arcade version, was an arcade cabinet that allowed players to play Um Jammer Lammy in versus mode using controllers designed as guitars; a concept later adopted by the Guitar Hero franchise.

With the help of Namco, Sony of Japan released an arcade version of Um Jammer Lammy which had updated graphics and new songs in addition to the original songs.

This 2-player arcade cabinet converts the PlayStation title into an arcade experience with a set of realistic guitar controllers. The game features three difficulty levels, three playable characters, and three game modes (Solo, Team and Battle).

It was fully discovered by r/Parappa subreddit in early 2023.