Rare Video Game Stuff: Collectible, Prototype, Developer, & Other

“Wordtris Nintendo Game Boy Prototype Cartridge w EPROM”
Pole Position prototype “loaner cartridge” that’s included in a big lot of Atari 2600 stuff
“RARE Nintendo NPDP READER Dev and Debug Box Gamecube” (Auction ended without reserve being met at $351.00 USD. ┬áIt’s been relisted as RARE Nintendo NPDP READER Dev and Debug Box Gamecube)

also

“LAB LOANER PROTO Ms. PAC-MAN (Atari 5200) RARE Atari”
“CONTROL DECK TEST CARTRIDGE” for testing original 8-bit Nintendo controllers. (Sold on eBay for $139.49 USD on Oct. 23, 2009)
“Rare Unlicensed Nintendo Nes Game – Super Mario Party” (Sold on eBay for $58.87 USD on Oct 14, 2009)
“RARE Nintendo Gameboy origional store display” (Sold on eBay for $685 USD on Sept 24, 2009)