itch.io

The game is definetly not optimized. But also it shouldnt lag hard.
It is definetly missing any "visual" indicator that the flow of time is slowed as enemies get closer to your tower.
The number is in the bottom right corner.
I can only hope that it is that and I am not cooking anyone's CPUs :D

I didn't manage to upload the correct build at the last minute, which should have contained a fix for that :D.
If you want to play it as it was intended, then use the buttons in the top right corner which are clickable with a mouse (the price tags).
(you can say the keyboard controls are just a way to cheat :D )