Slot machines are the most popular casino game in the world, both at land-based and internet casinos. There are now over 1,000 online slot machines, including classic 3-reel slots, the newer 5-reel and 7-reel video slots, interactive i-Slots, and progressive jackpots. There are dozens of software providers for these machines, including Microgaming, Real time Gaming, Play Tech, Vegas Technology, and Boss Multimedia system. If a person only desires to play for fun, lucrative lots of internet si...