At the moment I am digging Strike Knight. There is a free version which is nice. I don't buy many games because I don't really have the time to play them. The game was done with a sense of humor which I love and you can play up to 4 players on the same phone.
Unblock free has had me going for A while too. You have to pay to get the hard levels but the intermediate levels are enough of a challenge for me atmo.
Anyone play any of the final fantasy games? I am considering one of those.