Halloween only! Get a $13 free play at both of these casinos. The free play lets you get rolling on the appropriately themed slot game Scary Rich. You get to choose from any of the 3 versions of this slot game, Scary Rich 1, 2 or 3.
No bonus code needed in this case. The bonus is available in the cashier of each casino. Register your account, login and head to the cashier. Locate the offer, claim it and head back to the lobby. The halloween slots should be pretty easy to find this time of year, so click on the Scary Rich version you want to play and enjoy spinning the reels with your $13 credit.
$13 can turn into a lot more with a little luck, and keep in mind you have $26 if you claim this bonus on both casinos.
Good luck, and a safe Halloween to everyone!