I gave it an honest go but no thank you

Gameplay is slooow, the build times are long, and the in-game costs are wacky!
The economics are truly wacky....some things are in line with what would be expected then some are just far off by thousands of diamonds (rarest of resources that you can buy with real $) for some basic item. You must check in on the game at specific intervals as coins must be collected on a schedule or you loose them. There is too much waiting around after every choice made. Repairs after someone attacks or does some sabotage take DAYS to repair. There is no "time out" after an attack or sabotage so a person or an alliance can pound you over and over and over again. With repairs taking so long you cannot get battle ready before the next attack (unless you spend $). There is no player level alignment in battles so high levels can and do easily bash lower levels. Some level 40s (top level), with nothing left to spend resources on, create huge numbers of attackers and "pick on" lower levels. Not much fun in that.
You dont actually get to see your opponents base or attacks; you only see their name with some stats and a win or lose outcome.
No one gets to see your base either other than you. No strategy of base design comes into play.

I also call Baloney on the multiple recent 5 star one line ("best game ever") reviews. They dont seem genuine.

Doing_the_Loop about Shadow Kings