The well-respected software developers often try to provide the best gaming experience by allowing you to play free slot machines. Below we are going to take a look at the top 10 free slot machine providers. The sixth position on our list of free slot machines takes Monopoly On The Money slot game from Barcrest. The game process is organized using 5 reels and 10 paylines, and the RTP of the slot game is 97.75percent.