Alright, > and < are being removed in comments and I cannot edit my comment.
Instead of a spinning cube you could show something like (current cubes in big cube) / (max cubes the big cube can hold).
Please add an option to stop the cube from spinning or to stop visible cubes being added. To see the filling progress you could instead show a counter, maybe something like / and below a counter for each color.
Also the Cube Status text in the top right shows Cube Level 2 (because I finished prestige tier 2?) but Cube Size still shows as 1x1x1, even on tier 1 phase 13.
Building the cheapest tower is all you need to do. Game window is too small. First wave timer is too short. Clicking the towers is a pain since clicking the circle does not always select the tower thus moving the game screen.
Well, the range for 32bit signed integer is −2,147,483,648 to 2,147,483,647. As pascalboss pointed out / use bigint or a type that works. A starting point (it will _not_ help a lot) would be to compile using 64bit
Alright, I've let the game running until I was level 38xx. I did not unlock the last skill, maybe it is not implemented. The heal skill as is is not very useful. You get 10 hp per level. I made it to heal lv12 yesterday while monsters dealt 1k+ damage. The crit skill also needs an explanation.
Apart from that I can fully support the "Idle" tag.
 "Pixels Filling Squares 3.0"){kind=icon}
 "Underworld Idle"){kind=icon}
 "Incremental Cubes"){kind=icon}
 "Extreme Defense"){kind=icon}
 "Flight"){kind=icon}
 "Royal Poker"){kind=icon}
 "Christmas Idle Clicker"){kind=icon}
 "idleBlog"){kind=icon}
 "Endless Ball"){kind=icon}
 "Idle Toasters"){kind=icon}
 "Color rebound"){kind=icon}
 "Block Invaders"){kind=icon}
 "Crayon Clicker"){kind=icon}
 "Coffee Clicker"){kind=icon}
 "IDLE: Balls In The Pit"){kind=icon}
 "IdleByte 2"){kind=icon}
 "BrainCreator"){kind=icon}
 "S.A.HC2"){kind=icon}
Game is make for Android phone, is simple kill-timer and funny game