There are more similarities between each sites but not to the extent that they will completely copied the site because Indeed for those who knew Stake.com(things that surely majority of online gamblers knew stake) will definitely not playing at all means in this them.
and besides this only prove one thing that the said site cannot afford to even Hire a designer for their own uniqueness.
there are lots of slot provider of Slot games , wondering why they are not still having those when it is a common practice for each site to have slot.