I bought the Cards against Humanity game for my daughter and son-in-law. She had it posted on her Amazon wishlist. They both seem to just love it and were most happy to get it and the first expansion. Personally it didnt seem like something I wanted to do.
Puzzle Pirates I have played in the past. I got good at only one of the puzzle games on it and the rest were just beyond my capability to react. The community on it isnt as open as some others. At least you can manage to get by on it without having to spend great amounts of real money.