It features three highly engaging bonus features in which you can win up to 500x your stake. This Irish-themed slot machine is wildly popular at both land based and online casinos in the UK. Any wins during the Cleopatra Bonus also get a x3 multiplier. Land 3, 4, or 5 scatter symbols and you can get up to 15 free spins. Cleopatra is on our list of top UK free slot games because there are a few features that you can trigger.