By chance are you playing in Internet Explorer? The new Vegas Slots are not compatible with IE 8 or IE 9; you must have at least IE 10 in order to play the Vegas Slots with Internet Explorer.
Even though Internet Explorer 10 and higher will work, we encourage all players to use the latest version of Google Chrome or the latest version of Firefox. Those browsers will offer the best experience with Slingo® Casino, especially in Vegas Slots.
Thanks for playing Slingo® Casino!