I don't know if anyone likes online games or not, but this one can be a challenge:
http://games.adultswim.com/hrmageddon-puzzle-online-game.html
There are several different offices to play. Hire six employees, use their powers to defeat the opposing company. Solo playing can be normal (6 against 6, evenly matched) or Hard (6 against 7, they have more power).
There is also a multi-player option, where you can play whomever happens to be online. But it seems like there aren't a lot of people online when I go to play. That's why I'm posting it here.
Also, if people sign up over there (I haven't), they can make private games.
If not signed up, nobody knows who anyone else is, it just labels us as "guest" with a number. And that number changes every game.
But on our own computers, it keeps score for us, how many wins/losses in Single player and Multi-player.
Multi-player does have chat, but the turns are timed. So there isn't a lot of time to chat.
I did update my flash player to the latest version. I had been crashing before.
I thought it might be fun to play with people from here. And also a good way to blow off steam, like instead of people using the negative rep, they could challenge each other to a game or two.