GamingPickz

Um Jammer Lammy

Catalogue entry · not reviewed

Um Jammer Lammy is a 1999 rhythm video game developed by NanaOn-Sha and published by Sony Computer Entertainment for the PlayStation. It is a spin-off and follow up to 1996's PaRappa the Rapper, once again featuring the collaboration of music producer and game designer Masaya Matsuura and artist Rodney Alan Greenblat. An arcade version co-developed by Namco, titled Um Jammer Lammy NOW!, was released in Japanese arcades in December 1999. The game received generally positive reviews from critics.

Summary from Wikipedia, available under CC BY-SA, read 5 September 2026.

Your like matters. Every heart nudges this game's GamingPickz Score and where it ranks (a small 5% of the score), so the lists get better for everyone.

Would you recommend it?
Released
1999
Developer
NanaOn-Sha
Platforms
1 systems
Critics
Not scored
Steam Deck
Unknown
Download
Not stated
We have not written a full review of this game.This is a catalogue entry: everything below comes from a source we can link, checked on a stated date. There is no score and no verdict here, because we only publish those after a reviewer has played the game and written it up properly. Our team may well have played this one. Until someone writes the review, we are not going to imply a verdict we have not put our name to.

The record

Catalogue facts
First released18 March 1999
DeveloperNanaOn-Sha
PublisherSony Interactive Entertainment
PlatformsArcade
Genresmusic video game

Source. Catalogue facts from Wikidata Q2164073, seeded 30 August 2026.

Where Um Jammer Lammy sits on the grid

The grid places every game in the catalogue on measured axes rather than on an opinion. This is where Um Jammer Lammy lands on each map it has the data for, with the share of the catalogue it beats on each axis.

The whole catalogueLargely forgotten
Year
58ahead of 12% of the catalogue
Reach
19ahead of 66% of the catalogue

Percentiles are against the games that carry a reading on that axis, not the whole catalogue: counting a game with no figure as a zero would flatter everything that has one. How the grid works.

What readers say about Um Jammer Lammy

Reviews written by people who have played it. These are separate from the GamingPickz Score and are never averaged into it: that score comes from thousands of Steam reviews with a sample-size correction, and a handful of unverified ratings would distort it rather than improve it.

Loading reviews…

Did it run on your PC?

Tell other players how it ran on your machine. One tap, from your saved PC if you have one.

Get the weekly rundown

One email a week: what moved in the rankings, what launched, and what dropped in price. No more than that, and unsubscribing takes one click.

We send the weekly email and nothing else. Your address is never sold, shared or used to build a profile, and it is not readable by anyone visiting this site. See our privacy policy.

Common questions about Um Jammer Lammy

What platforms is Um Jammer Lammy on?

Um Jammer Lammy is available on Arcade. It first released in 1999.

Who made Um Jammer Lammy?

Um Jammer Lammy was developed by NanaOn-Sha and published by Sony Interactive Entertainment.