Cash grab
First time you play the wall starts flashing red to indicate that it will be breached soon. Regardless of the warning, you lose, you can pay to continue or restart. Second play through the wall does not flash red, everything seems just fine and you have enough knife fighters to protect the wall but guess what: pay to continue or restart. This game will have you lose for no reason and it will not indicate that you are about to lose because what these devs want you to see is the pay to continue screen after you have spent an hour or two progressing. Monody wants to waste the time spent so they are more willing to pay to continue. I would not be surprised to find that the wall fails easily within an hour of paying to continue. A shame the devs have to be greedy like this, it spoils the game. For people who have money to spend there are raid packs to buy. Why screw over the people who do not have money to spend or are not willing to spend it on raid/dev support packs when the devs seem to design the game to push people to pay to continue. That is down right greedy. If not for that, I am sure more people would show support via the packs. I will sure as nuts not spend a cent on greedy devs. Great game ruined by greed. Go ahead, waste your time to be presented with a pay to continue screen. Enjoy.