Um Jammer Lammy (Jan 22, 1999 prototype)

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Title Screen
Um Jammer Lammy (Jan 22, 1999 prototype)
Build date Jan 22, 1999 22:57:00
Build name Preview
Dump status Released, redump needed
Released by Hidden Palace
File release date April 17, 2021
Origin CD-R
Lot Project Deluge
Labels Um Jammer Lammy Previewable
Dump method PLEXTOR DVDR PX-716UF 1.11 03/23/07 15:10 (CloneCD)
Game Um Jammer Lammy
System PlayStation
Genre Rhythm
Final build JP Feb 8, 1999
EU Aug 12, 1999
US Jul 15, 1999
Release date JP Mar 18, 1999
EU Aug 12, 1999
US Jul 31, 1999
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A prototype of Um Jammer Lammy for the PlayStation.


The Cutting Room Floor research
  • An NTSC-J build dated 17 days before the final.
  • The NanaOn-Sha logo screen uses a different animation.
  • This build has various cutscene differences.
  • Fever Mode can be activated in Cool Mode by holding down L2 + R2 and pressing one of the main buttons.
  • Miscellaneous Notes:
    • Game is emulatable: Yes (as of April 17, 2021).
    • Game contains dongle protection: No.
    • Game contains debugging symbols: No
    • Dump was originally scrambled: No




File Type Date Size SHA-1
PSX - Um Jammer Lammy Previewable.img File 2020-12-15 02:30:19 706.8 MB a86930fa125f290584510dcd383e9b38d8431853
PSX - Um Jammer Lammy Previewable.cue File 2020-12-15 02:14:15 97 bytes e70784497490ad0df6dfed9c5c831f46497f87a2
PSX - Um Jammer Lammy Previewable.ccd File 2020-12-15 02:14:15 772 bytes 98a72e0e95de5ff2c9bd5624b2d018e992b7fbca
PSX - Um Jammer Lammy Previewable.sub File 2020-12-15 02:31:17 28.85 MB 0c9339b74a7c0d68c70c8c84bea069d7d11737d6
PSX - Um Jammer Lammy Previewable.jpeg File 2021-03-14 12:15:46 566.3 KB 2fafaa2db2c7babbdd06e00061bb6fdc23d3c06b


A huge thanks to Hwd45 for doing the initial research on this prototype!

See also