At RTG i only play slots (the real series including the new ones like raindance, tigertreasure etc). As you probably know, the software is said to be streaky, and although you cant force a win to come, you can - at least that is what i try - cut your losses. That means: I never spend a long time on a cold machine, but change them after two or three spins, when i feel that nothing will happen. It s a try to read the slots ---
For freegames (i feel, but dont have statistics yet) you need a "scatterish surrounding", i.e. if the slot gives two scatters at once, it seems much more likely that three scatters will come. This is especially at Ronin (I ll leave it at once, if no ronin appears). But very similar at the atztecs, diamond gold and at the Robin Hood slot. Maybe its "pure fantasy" , but i m quite lucky with this way to play.