why most of the casinos all interface is same? is it run by same companies?
The casinos are not run by the same company - although the interface is similar, because some of the casinos have the same provider as other casinos, as this may be common for crypto casinos.
You can see from the Sportsbook that the interface is almost the same, but I believe it's from the same provider including other casinos.
Your promotional images show PlaynGo slots, but there are none in the casino
Yes I did check that the slot games in this casino are not complete, has the team added many providers yet?