For those who complain of productivity cutting out: You probably don't have high enough generation for the source material to account for the spike when certain productions turn on (such as workers or searching). If you have stuff generating high enough to account for this, production will never stop no matter what.
Nukes are mostly useless. They don't generate fast enough to ever make a difference except maybe the very first time you unlock them and need to push an extra level. I need over 10k nukes for 1 attack and it's taken me an entire game to build up that many.
At end game, the only limiting factor seems to be Habitable Space.. Also, with large numbers of attackers the speed of combat really grinds to a SLOW pace (assuming due to math involved?) --dropping down to smaller # speeds it up.
Upgrades require purchase of x25, but can only purchase levels in groups of x10. What the heck logic?? Let us "buy to next upgrade" or purchase x25 at a time.
The scaling starts to get pretty horrible around level 200. It looks like it's designed to force use of premium currency to buy gold in order to advance.
Having content gated behind ads is pretty shady. can't summon the ghost sword without watching an ad (which don't register all the time) -- Pretty bad. Why do we have to spend skulls on something we have to watch ads to use?
Finally beat it. Had to do a bit of grinding. Still think there needs to be some balance passes, but overall a really good start. Would love to see a prestige added that lets you start over with bonus stats and harder mobs or something. Or more floors, of course.
Not enough stat points are given to go far. Only way to really pass levels is by dumping all into attack. Think giving 4-5 points per level would alleviate this. Mob respawn is too slow to farm keys to unlock stuff. Gold costs increase too quick.
mobs should respawn when you're not on their screen. the scaling is a bit off... level 5 starts to become insanely hard. Gold/exp should auto pick up (or maybe auto gives you a reduced amnt?)... let us respec somehow. Overall a great start.
 "Idle Space")
 "Microchip Builder")
 "Idle Mons")
 "Tap Knight")
 "Drakenslash")
 "Gods' Fall - Ascension of High Kings")
 "Pride of Place")
 "World explore")
every ships and weapons require extra calculations (combat simulate every ships, it's like some famous broswer game)