Is this the actual Prototype box?

[Balloon Fight]

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2230715180&category=37889

I thought it was only for the Atari 2600.

[video_game_addict]

That same guy auctioned off a couple of them last year, he had one for the 2600 & this makes the second for the Intellivision. It's pretty cool history behind them.