It crashes. My 156 level cat mated with a 157 level cat but then stuck at level 1 with 25053588/60xp forever. It says a negative more time (-75:-10:-59) is needed until it becomes at max level. Gameover.
This game is superb, very refreshing amidst all the idle games flooding all over places. But the current issue I think is memory leakage, which makes the game unplayable for me. My notebook is not a great one, and I observed my hard disk free space sinks from 2Gb to something like 500Mb after I started the game, and it became excruciatingly lagging. I hope one day it will be solved:)
 "Idle Grindia: Dungeon Quest"){kind=icon}
 "Kitty Catalyst"){kind=icon}
 "AntiVillain 1 - Welcome To Chaos City"){kind=icon}
 "The Farm"){kind=icon}