Play. The Goonies Slot Review & Free Demo. This slot offers free spins, wild reels, additional random wilds and more! You can play from as little as 10p, with the highest bet amounting to £ While it's. Go on a treasure-hunting adventure with The Goonies slot and win over 10,x the bet via 14 different bonus features. This popularity is for a number of reasons, the simple fact that the Return to Player percentage is visible in every game essentially allows for no human error. .