I really have fun playing fortune's tower... the other two I find boring. The slotspinner game seems to be nothing but a money sink, and very boring. Keystone was the one I thought I would like the best, but I also found that one to get boring pretty fast. I have found a strategy that pretty much seems to guarentee a slow and steady win rate... but it's excruciatingly dull 🙂
I seem to do ok with fortune's tower... it's fun trying to guess when the best time is to bail.. or to push my luck. Sometimes I get into streaks of terrible luck though and lose a lot of money. Nevertheless I'm about 5000 up so far.
The best part is the tournaments... moreso than money, I want all of the items that I can win in the tournaments that you can't get just by playing the game. I've got the items so far for the first 3 levels of tournaments. Two more to go. It would be kind of fun if you could have tournments online with other players, but apparently that isn't possible.