Most software providers offer progressive jackpot networks in their portfolio. A number of online slot games are linked to this progressive jackpot, which can be hit from any of the slot games. The most popular online progressive jackpot network is Mega Moolah from the software provider Microgaming.

Mega Moolah was launched as an isolated online slot game in November 2006 with a four tier progressive jackpot. The largest of these jackpots is called Mega Progressive and it resets at 1 million credits. The other three jackpots, Major Progressive, Minor Progressive and Mini Progressive,are reset at decreasingly lower levels. The jackpots are hit through a bonus game that is randomly triggered. In this game a Wheel of Fortune is spun. This wheel contains different colored bands representing the different progressive jackpots of Mega Moolah. The colored band next to arrow when the wheel stops indicates which jackpot is hit. Once the bonus game is triggered the player is guaranteed to win one of the four progressive jackpots. The frequency of winning the smaller jackpots is obviously much higher.

The Mega Progressive is the jackpot that is tracked by players at Microgaming online casinos. On an average it has been hitting at about 2.5 million credits every two months. However the Mega Progressive is a volatile jackpot. On the lower side there have been several hits just above the reset value of one million credits. The highest that this jackpot has paid out is 6.37 million credits in May 2009. The winner was Georgios M who was wagering at the River Belle online casino.

The original Mega Moolah slot game had an African safari theme. By the end of 2008 the popularity of Mega Moolah was so high that Microgaming decided to add other online slot games and create the Mega Moolah network. For this purpose Microgaming selected some of its popular online slots and adapted them for the Mega Moolah network. In this manner the brand equity of these games enhanced the value of Mega Moolah. In January 2009 Five Reel Drive was connected to the Mega Moolah network. The next game was Summertime in May 2009 and Isis in August 2009. Then for a long time there was no addition to the network.

In the summer of 2010 Microgaming launched a branded online slot game titled The Fellowship of the Rings. This was based on the first part of The Lord of the Rings trilogy. For a year this slot game ruled Microgaming online casinos. In the summer of 2011 the slot game was adapted and linked to the Mega Moolah progressive jackpot network. In the summer of 2012 another branded online slot was added to the network. This was The Dark Knight based on the Warner Brothers movie of the same name. Both these are high quality games and have brought considerable traffic to the network. Two Lord of the Rings slots have been announced as has a sequel to The Dark Knight. One can presume that they will be added to the Mega Moolah network as and when released. Some of the Microgaming online casinos have been highly rated by TopCasinos. These include 32Red, All Slots, Royal Vegas and Golden Riviera. The Mega Moolah progressive slot games are live at these online casinos.