Ads-duration items are a total waste. They need a serious buff or replacement. By the time I get enough likes to get them most of my ads auto-restart from friends, and those that do not already have super-long duration.
My tower won't die. I have 5e14 health and atk of the cubes is 7e44 now, keeps increasing. I see them sometimes touch my tower but I never die. Is it that 95% unbreakable chance + 50% absorb chance + Nova makes gives them extremely low chances to actually land a hit that kills me. (reducing the tower to 1HP does nothing with maxed lifesteal and other heal stuff)
The hp of the cubes in hard mode shouldn't be just 3 times the normal one, it should also increase faster. Like it is now it's too easy and basically the exact same as normal mode just a tiny bit harder for massively better reward.
Saving gems is OP. Saved about 100 gems, started a round, put 50 in interest and 50 in ress/wave and buy some ress bonus % which stacks with interest. Made it to easily to wave 500 where I just gave up because I don't think I would have ever died. Had over 100 mil ress at that point and pretty much everything maxed than can be. Now my starting income is 13 million ....
Most people seem to complain they die at about wave 20. Most likely because around that wave it is no longer possible to one-shot the enemies and it's a massive hurdle to overcome. You either die, or make it witch 2 shots per enemy and can go on for another 20 waves or so. There really is no inbetween with that. I think it adds an element of strategy but many seem to not like that wall.
Thanks for your feedback. It is really difficult to balance to the game at the current stage because half of all feedbacks are "the game is too easy" or "the game is impossible/has only useless upgrades" (useless upgrades is partly true atm ^^).
Some buildings you ever need one of. For example glass production has negligible upgrade coast compared to sand consumption, so just upgrading the one is fine.
The upgrades or strength for manual clicking needs a serious buff. If every second I make 5000 times as much as a single click gets me there is no incentive to click manually. (Maybe make it so that clicking gives a percentage if the idle income?)
 "Shop Empire Underground"){kind=icon}
 "Tapularity"){kind=icon}
 "Strategic Tic-Tac-Toe"){kind=icon}
 "Royal Heroes"){kind=icon}
 "The Perfect Tower"){kind=icon}
 "Reapers Revenge (Beta)"){kind=icon}
 "Endless Expansion"){kind=icon}
 "Idle Quotes"){kind=icon}
 "World Idle"){kind=icon}
 "Happy Mart"){kind=icon}
 "Creeper World 3: Abraxis"){kind=icon}
We'll look into it. Sadly I can not reproduce it right now. Could you send me the save code per direct message?