The apps don't crash on me, but they're quite buggy. They take forever to start, using most on an 8 core machine, screw up my screen resolution without saving the state of my open windows, and then each one I've tried seems to have odd problems: for example I need to actually resize a window before any of the player's pieces are visible! That was a cute one -- I was clicking away, making moves and even losing the game but the window didn't show a thing!
So then I quit and have to manually rearrange the desktop and resize open window. Way too much work for a game.
▛▞▞▟ Proud Member of the BLUE Team™ ▙▚▚▜