The following cartridge is a prototype build of Deja Vu for the Nintendo Entertainment System, developed by Kemco. This specific version is dated May 15th 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_15_1990.nes
BitSize:            3 Mbit
Size (Bytes):       393232
CRC32:              5CC9B3A5
MD5:                0BBF634557404E7498B7AC36815E607E
SHA1:               E6CEF6D8D94218D8CE348CA4D22214DB06D9012B
SHA256:             273EE4D0B1D4A891EAD8C5BE8FFF82C7F6FF0A8057923463BBAC060625FE68E8
----| 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; 0xCA8B)
CHR-VROM Checksum:  0xFF60 (Bad; 0xC90A)
PRG Size:           0x15 (33554432 KBytes)
CHR Size:           0x15 (16777216 KBytes)
Mirroring:          0x15 (Horizontal)
Board Type:         0x15
Unknown 1:          0x9AEC9AEC
Maker Code:         0x9A (Nichibutsu/Nihon Bussan)
Unknown 2:          0xEC
Vectors:            0x9AEC00E840EB
----| Headerless Data |--------------------------------------------
Size (Bytes):       393216
CRC32:              B6789586
MD5:                EA04F1C2EA1425FFCE24955D84ECD707
SHA1:               3D7CE306E237F278698E9F4BC5B0E64F82AC504C
SHA256:             C033BAB85FFC888B3B20DC09DF5625809465147EFEF9A8D147F837ED6BB9A96D

Board / Cartridge Images

Cart Front


Download Deja Vu (USA) (Prototype) (May 15)