Space Spartans for Int.

[scmor92]

I found a sealed boxed copy of Space Spartans for the Intellivision. It is a "voice synthesis cartridge." I'd like to trade it for some Atari 2600 games since I don't own an Intellivision. Any takers? Is this a rare game? There were some other boxed Int. games that I didn't buy. I got Space Spartans for $1.95.

 

Any info would be greatly appreciated.