There is a free spins bonus on theDaVinci Diamonds slot, triggered by getting the 3 bonus symbols on Reels 1, 2 and 3 on a payline but you onlyget 6 free spins (or 'tumbles' would be more accurate I guess!). How this works isthat when you get a winning spin, the winning symbols explode and the reels drop to potentially reveal furtherwins - a feature since adopted by Microgaming on theirTomb Raider 2 slot. IGT call this concept 'Tumbling Reels'and have actually started to introduce it into other slot games. The DaVinci Diamonds slot and it's succesor, Davinci Diamonds Dualplaybreaks the mould and uses a novel cascading reels motion.