I took advantage of the free $10 they offer at Happy Days Bingo. I love playing here along with the sister sites, I like being able to play slots in between games. I think by now, everyone knows that 90 ball bingo is my favorite!!! The fact that you have 3 chances to win is what I love. My first game, I didn't even come close to seeing red. So I played my favorite Mermaid Slot and forgot to buy cards! (I hate when that happens) But on the very next game, WOOOO HOOOO!!! I won on two lines and the full house!! $20.00 total. I continued to play a few more games without a win and of course gave back what I won! I played for about 2 hours on the free $10 and you know I HAD A GREAT TIME!!!! GOOD LUCK ALL!!