I'm finding turn-based strategy to be relaxing and enjoyable. http://pathway-game.com/
Decision-making is a rivalrous activity, but the context and awareness required for good decisions is relatively non-rivalrous and can/should be scaled out as such.
Played super carefully tonight and managed to survive E at 19x19 #go with 5 handicap.
Da-rt: like the thing you shoot at bad guys and they fall asleep. #straightetalk