Lots of bugs
Internal countdown/refresh is faulty, like the daily reward can only claim once and never refreshed, in game progress time won’t continue after you leave the game, makes it useless. Progression requirements is very unbalanced, meaning your capability is far off from what’s required, makes it impossible to upgrade, but this either shows they just roll out without deep calculation, or they just want ads money, either is… you know.. small timer. They just combine two existing game into one and lots of ads.