Adventures of Rad Gravity (Prototype)

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Title Screen
Adventures of Rad Gravity (Prototype)
Dump status Released
Dumped by Frank Cifaldi
Released by Josh Hamblin
File release date December 25, 2024
Origin NES-SKEPROM-01 cartridge
Lot Steven McKay Auction
Ownership Josh Hamblin (2024)
Game Adventures of Rad Gravity
System NES
Release date US December 1990
EU May 30, 1991
AU 1991
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A prototype of Adventures of Rad Gravity for the NES.

Notes

  • 7-31-90 on chips, final was 8/20 and 0.1, this is likely 0.0/first submission
WATA certification
Certification Number: 595776-060

Analysis: Frank Cifaldi

Object Analysis:

Object is an NES cartridge with a typewritten front label identifying the game's title and manufacturer. The text "For Sample Only - Not For Resale" is also present.

The circuit board inside bares part number NES-SKEPROM-01, a known Nintendo-supplied prototyping part. The board appears authentic, and the IC chips have manufacturing dates appropriate to the game's development period. Handwritten stickers on the game's data EPROMs signify a date of 7-31-90. According to our research, the final game's ROM data was received by Nintendo on 8/20/90, and was the second submission. It is possible that the ROM data here is the first, possibly rejected, submission for manufacturing.

Data Analysis:

(Hash info is for the combined headerless ROM)

CRC-32: 5430B499

SHA-1: AB34EFAA48C00932D38F67528C240FE02277E6DF

SHA-256: 598A0C0C26252A3E0AC5D7771CA8266A0828431879325B7A3F1F4483BE17A8F1

MD-5: 478C45286E74738192B1C7B6894F671A

The data differs from the retail game, and does not match any known data on the internet. No differences were observed via gameplay.

Provenance Notes:

According to the submitter, this item was purchased from the McLaren Auction Services "Vintage Nintendo Online-Only Auction," which ran from March 25 to April 1, 2022. McLaren claims that these items came from Steve McKay, former "General Manager of the Mexico Division" at Nintendo. Approximately 97 items from this auction were submitted to WATA at once. Given that the auction listings are not archived on McLaren's website, I was unable to verify each individual item as having come from the auction. However, I did view this auction when it was live, and can attest that the scope of this collection is in line with my memory of what was available.

Conclusion:

Given the authentic parts used, the provenance, and the unique data available across the items from this McLaren auction, I have no reason to doubt the authenticity of this item.

Origin