Been hooked pretty bad on Draw Something for the past few days. It's so bad that I've pretty much stopped playing most of my other goto games, and instead have been playing it for 3 hours strait a time.
I was resistant at first, but after downloading Charadium II, it pains me to admit that Charadium is a much better game. The draw tools are better. There's an undo button, and when you use it or the trash button, it actually deletes that part of the drawing from the playback video (I actually like how it shows you ripping the page off in Draw Something, but I like Charadium's method more as it's better for the presentation).
There are 3 different modes. I've only played the asyncherous mode (which is untimed and lets 3 or 4 players draw at the same time, and then guess on each others' works), but there are 2 other modes which I suspect may not be asyncherous, and instead more like the FB version of Draw Something.
It was free when I grabbed it a few hours ago, not sure about now. I believe there's a free version though, and would recommend it to anyone who is currently playing Draw Something.