How come a lot of you people have seen/own this game in pairs!?
Probably because it's a cool game.

Although I don't have 2 of them. The working title for it was "Ice Castles".
It's a deep game, and to really enjoy it you need to get into it and amass some skills, and progress through the levels, earning your way as you go. Using a hall effect with this game is key, as slight, subtle movements are often necessary. The people I've shown it to like it, but it's definitely not one of the easier titles in my arcade.
As mentioned, it was a technological milestone piece graphically and the first game to use selectable camera angles. Atari held 3 patents on the technology involved in I, Robot. It had the first large-scale custom ICs. Dave Theurer (Tempest & Missile Command creator) was the project leader, and Breighton 'Rusty' Dawe (Paperboy & Cloak & Dagger creator) also contributed to its development of it before leaving the team to go off and start another project.
Here's Jeff Anderson's excellent I, Robot site (hosted by Ionpool now):
I, Robot.
And more from Ionpool:
I, Robot Technical Help Page.
For those that have the game and don't know, on level 1, when entering the transporter, you can warp all the way to Level 10 if you hold down both Start buttons when entering. If you don't hold the buttons down, you'll just be able to select from levels 2-5 to warp up to.