The following cartridge is a prototype build of Deja Vu for the Nintendo Entertainment System, developed by Kemco. This specific version is dated July 3rd and was rescued from a private collection in Indiana.


  • Absence of copyright and licensing information on the Kemco logo screen.
  • 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_-_July_3_1990.nes
BitSize:            3 Mbit
Size (Bytes):       393232
CRC32:              2023F27B
MD5:                78E2DBE420796676B4B5E7C5EF1EE514
SHA1:               47316E77204FD6BAF5D5F0E9F2BC5EFFCB5A2D30
SHA256:             3ADD4F9157898FE84E057BD3BEED9A439151A53E4E8783DFCEE5DDBD6EFB64A2
----| 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:              ????w ???u?L??`
PRG-ROM Checksum:   0xFFFF (Bad; 0x828B)
CHR-VROM Checksum:  0xFFFF (Bad; 0xEF26)
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:              CA92D458
MD5:                F52D44483208EE39A0BE67AF60CEF2F3
SHA1:               064D6517FA3FD37BDF64D12FF0A088B7A32CCE87
SHA256:             5C289805C0F64E9C35A2D516BCF6B517361B4F541D10AEE23A5177EAC68D5881

Board / Cartridge Images

Cart Front


Download Deja Vu (USA) (Prototype) (July 3)