I kinda like the idea, given that I was thinking of going ādata-center tower defenseā myself.
The thing that takes away most from enjoyment is that Iām just not sure what Iām supposed to do. Thereās just not enough feedback to player actions. The first night is just empty, and even after that I was just running circles waiting for the enemies to spawn.
Maybe it would be better if there were more enemies but they had less health. But nevertheless, good job!