For us soccer/football fans, I've been wasting about and hour a day on this:
It's a management sim, where you set lineups, transfer players, invest in the staff, call up youth players and play in league and friendly matches.
I know I sound like an ad, but this game is just too much fun, and you only have to really check in every few days (but I'm hooked, so it's a bit more often for me)
Just FYI: my team is the Tulsa Badgers, ID#223929. Tied for first right now in my Sixth-Division league.