There’s an eBay auction currently in progress for an unreleased prototype of Chip’s Challenge for NES. I didn’t even realize that existed. At $1091.77 with 47 bids, it’s a little out of my price range. Interesting nevertheless. Thanks to Retro Treasures for posting about it!
via Unreleased Chip’s Challenge NES Prototype, Gnome, Retro Treasures, 12/12/14.
Source: UNRELEASED NES Prototype EPROM Card CHIP’S CHALLENGE DEMO NTSC 1992 NINTENDO, 93tomegatherion, eBay,