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The following prototype cartridges are in public circulation, most of which are currently in the hands of collectors. Although they are pre-release versions, they hold the final build’s data.

Probotector II PAL Sample:


Originally posted by user midget35 of the Lost Level forum. He had obtained it from Future Publishing, Bath, a magazine he had worked for. What is interesting about this sample is that its label is almost identical to the label of the NTSC-U sample of Probotector II. However, the user had the ROM verified as being identical to the final release.

Another copy is known to exist:


Probotector II Prototype:


Sold by a collector from Sweden, this prototype cartridge of Probotector II contains the final release of the game.

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