Agreed. Intellivision is much better than the 2600 version.
I seem to recall a controversy surrounding the Intellivision version. Something about a lawsuit, due to the mothership sequence (not in the 2600 version) being almost identical to the one in Phoenix.

Still, for it's day, I'm with PBJ on the 2600 version. I still play that game once in a while.

Does anyone remember the "Supercharger"? It was basically a huge cartridge with an audio connector on the end of it. The games came on cassettes which you would load using a tape recorder.
Does anyone know if the Supercharger is emulated?
I remember it. First saw it in one of the magazines, but it was a pricey piece, so I never had one. I was also concerned about there being a lack of software support, which eventually turned out to be the case. Still wanted one badly, as the games looked really nice. Stella seems to have support:
SuperCharger/AR ROMs now ignore the 'ramrandom' setting, and start with RAM containing all zeroes. This seems to fix issues with Dragonstomper always starting in exactly the same state.
The XONOX double carts were another great oddity. Two game sharing the same memory, so the cost per game was lower. Not fantastic games, but Artillery Duel was fun.