Um Jammer Lammy

PS1

A static recompilation of Um Jammer Lammy (US version, SCUS-94448) with psxrecomp. Its centerpiece is the “Rhythm Timing Assist” mod: it widens the early and late timing windows separately, up to 60 ms each, and compensates for display, controller, or audio delay, without touching the music clock or the scoring rules. It renders at 1080p by default, with adaptive or fixed 16:9 or 21:9 widescreen (movies and 2D menus keep their proportions), and it has fast loading that builds a cache from your disc: one menu’s resource load dropped from about 4.2 seconds to 0.2. It’s an initial preview: controller gameplay has been tested on Windows, but not every stage, the duets, or PaRappa mode have been checked systematically. 0.1.0 (October 8) shipped for Windows and Linux.

You needYour own Um Jammer Lammy disc image (PS1, US version, SCUS-94448) as .cue and .bin, a single MODE2/2352 track (SHA-1 86fc942a25063c56bb21a20db14961b9f0ac0039); a 2048-byte-per-sector ISO won’t work. A console BIOS is optional. 64-bit Windows or Linux (Ubuntu 24.04 or compatible).

How it gets to PC

Static recompilation

Console

PlayStation

Architecture

MIPS

Author

mstan

Original studio

NanaOn-Sha

Year

1999

Stars

4

Last activity

2026-11-06 · 5 days ago

Latest version

v0.1.1 · 2026-10-31

Language

C

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