What do people think of the various Rubik's games?
Eg The Infinity game or Eclipse?

Are they fun? Too simple? Too hard?

Also, I remember a kind of "connect four" game, but with a mirror in the middle, and the reflected pieces were also included. Great idea! Does anyone remember this game? I met someone who has it, but apparently some pieces are missing. Is it a rarity these days?

I own it! It's a great game:

http://www.twistymegasite.com/images/puzzles/rubiks-illusion.gif