Why not try Eclipse for yourself online?
http://www.rubikscube.com/eclipse_online.htmlUnfortuntely, the computer player is very easy, even on the "hard" setting.
Infinity is a variation of Connect-4 where you insert your pieces at the bottom instead of dropping them from the top. Each player has one special "joker" piece that gives you extra scoring points if you get 4 in a row with it. Sounds promising, but I haven't played it yet, and from the rules I can't tell whether it's great or lame...