Great UI! Mechanically, I feel like it would be a much stronger game if a 0.01 multiplier was added to the NPC progression though. As-is I barely have enough time to click on a character and give them an upgrade before they max out & are deleted. Given how fast the game autoplays through itself (I think maybe 2-3 minutes for me), trying to do the (I think upgrades) for the speed of NPC progress just didn't make sense for me. By the last 1/2 of the game, I was just clicking random stuff as characters appeared and got deleted, without feeling like my choices mattered at all.
There's something really good here, I think. But I wasn't able to experience it, based on how arbitrarily fast the game played through itself before I could do anything.