The following cartridge is a prototype build of Deja Vu for the Nintendo Entertainment System, developed by Kemco. This specific version is dated April 28th 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_-_Apr_28_1990.nes
BitSize:            3 Mbit
Size (Bytes):       393232
CRC32:              01F9982E
MD5:                F2E7776D04EE51806190249A5C9B6635
SHA1:               099331F65C7D87939D49236D801CBD4E61F7DDC2
SHA256:             2442AA7453D605149344BF83143C2439128881B4B24A567F7E59B0C5C6EF76CC
----| 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; 0x05F9)
CHR-VROM Checksum:  0xFF60 (Bad; 0xC529)
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:              EB48BE0D
MD5:                00245C3E9DF7E0A7501BA6578E12CBEA
SHA1:               A5C2D4AE4258FC1BB2EF6035FE178170CF98621E
SHA256:             A251FDCD5C0BC8F4BF0D22FA62D9D4228ACF725F4258C459E8932B306301E587

Board / Cartridge Images

Cart Front


Download Deja Vu (USA) (Prototype) (April 28)