The following cartridge is a prototype build of Deja Vu for the Nintendo Entertainment System, developed by Kemco. This specific version is dated May 8th and was rescued from a private collection in Indiana.


  • Absence of copyright and licensing information on the Kemco logo screen.
  • Copyright year on the prototype is 1988 instead of the retail’s 1990.
  • The file select contains a cocktail which was released by coins in the retail version.
  • Various differences within the game’s script.
  • Other graphical differences.


Screenshot Screenshot Screenshot

ROM Information

----| File Data |--------------------------------------------------
System:             Nintendo - Nintendo Entertainment System           
File:               Deja_Vu_-May_8_1990.nes
BitSize:            3 Mbit
Size (Bytes):       393232
CRC32:              4FFCAC77
MD5:                31140381C55E51BA68896C03B9E81C69
SHA1:               71AC9BF2A2EA469643B384ED628A146DBF6C6528
SHA256:             9A5D9E82DD795C1B5785D21976AD02F05A24D38572881BF8D4F2EA0D92D1B815
----| iNES Header Data |-------------------------------------------
Num ROM Banks:      0x08 (128 KBytes)
Num VROM Banks:     0x20 (256 KBytes)
Mirroring:          0 (Horizontal)
Save RAM:           1 (Yes)
Trainer:            0 (No)
4-Screen VRAM:      0 (No)
VS-System Cartridge:0 (No)
ROM Mapper:         4 (Nintendo MMC3)
Num RAM Banks:      0x00 (None or 8 KBytes)
Display:            0 (NTSC)
----| NES Header Data |--------------------------------------------
Title:              v??????w ???u?
PRG-ROM Checksum:   0x4CE1 (Bad; 0x4CA8)
CHR-VROM Checksum:  0xFF60 (Bad; 0xC90A)
PRG Size:           0x3 (128 KBytes)
CHR Size:           0x15 (16777216 KBytes)
Mirroring:          0x3 (Horizontal)
Board Type:         0x15
Unknown 1:          0x9AEC9AEC
Maker Code:         0x9A (Nichibutsu/Nihon Bussan)
Unknown 2:          0xEC
Vectors:            0x9AEC00E840EB
----| Headerless Data |--------------------------------------------
Size (Bytes):       393216
CRC32:              A54D8A54
MD5:                4D075F13240994403AE9F808CCC959B3
SHA1:               E934EF40761FEFF8F1C91E391E1D231EBC2620A3
SHA256:             FBFBB9C7B1535A1FFFA8B22D89755E4330A775577378A0223B8338F55D9872DC

Board / Cartridge Images

Cart Front


Download Deja Vu (USA) (Prototype) (May 8)