The third instalment of the Rabbit Hole Riches series, Agent of Hearts is an exciting grid slot that will keep you on your toes. Symbols drop into the grid; the aim is to get the biggest cluster of symbols possible (five or more). Only the highest win in the cluster is paid, then the winning symbols are removed, followed by new symbols that cascade to fill the gaps. Multiple clusters of the same symbol that are not connected are paid as separate clusters.