This is referred to as the 'maximum flush.' For instance, any hand with a maximum four-card flush beats any hand with a maximum three-card flush, but loses to any hand with a maximum five-card flush.
Where it differs is in the hand ranking, which is all about making the highest possible flush out of seven cards. The game follows a fold or raise structure, like Caribbean Stud Poker and Three Card Poker. After that slow beginning the game caught on and today has lots of placements. In February 2013 it found another placement at the M in Las Vegas.
High Card Flush made its debut at Harrah's Laughlin in summer 2011.
On This Page High Card Flush Introduction