Idle games gets slower as you progress further this is slow since the very beginning, the auto-cliker is only to produce brick and planks so if you run out of rocks and wood the game stops, so, if you leave the game unattended it could, and will, just stop, totally the opposite of what a idle game i suposed to offer.
Idle game reward you for being on the screen playing attention and cliking things, but they are not suposed yo punish you for leave.
Reviews for "Idle Tower Builder"
was fun then my progress got deleted for no reason