Martin wrote on 16. Jan 2011 at 11:39:
Yeah but most of my stuff is uninteresting... early version of Mace eh? hmm you should post some shots sometime

Turok 3 seems to be the most common proto out there, I own 3 different ones, from near final to final (preview).
The mace cart is very interresting. I bought it because its 1 of my favorite n64 games(yeah really).
But its a cart that is used over and over again.
The label of the cart says mace,but this ntsc mace also was a french hexen? and there is at least 1 label under that maybe 2.

I don't think i will be able to control myself and ripp them of eventually to see whats under.
Whats even more interresting is the pencil writing on the cart.I thought it said review,but if i hold it in the light the right way its says previews

The cart comes from a french seller that also sold me a french south park rally proto that seems a review cart(compaired it to youtube movies)
The french south park rally was directed to the french player 1 magazine.
This is a total gues but could this be a preview cartridge where previews where put on for magazines?
Sad that the old info is not on it anymore

Im thinking about making a review of mace for nesworld.
Without giving to much away,all i can say now is that mace is a core preview game and that compaired to the released version you can see perfectly where details where put.
And yes turok 3

i can confirm 10 prototypes

Biggest number of prototypes ever i think.
The game was hyped like you said ,but the bankrupt of acclaim helped throwing them out there.