Here's my two favorite Mac games: Machinarium and Zuma. Both have free trials available and have no DRM. Zuma is actually a teenie bit shooter but it's marbles! No one gets horribly killed. You spin a marble-shooting frog around to shoot out a big line of marbles before it gets to the sewer of doom. In Machinarium, you have to help out a cute little robot by solving lots of puzzles. You can sharpen your mind and reflexes with these two games without practicing to become a mass murderer. Of course if you like that sort of thing you'll probably hate these two... Have Fun, Keri
Just started playing Machinarium here and there and I do like. Must check out this Zuma you speak of.
Cannot say enough good things about Machinarium. Great music, awesome art and graphics, and, if you don't cheat, the puzzles are challenging but solvable. This is one dev that should definitely be supported. Check out some of his earlier stuff also.
Is there any way you can download a free trial of Machinarium, as opposed to playing it on your browser? And yeah; Zuma is ownage, but it's important to note that there's an amazing sequel out now.