Well Paint.net art gives rather distinguishable feel of a game designer.
Souls are spawned pretty fast, which requires fast reaction and decent visual short-term memory to play well in this game. I'm not sure how points are calculated though. Did you also keep track of which souls are good enough to be sent to hell or are bad enough to be sent to heaven to calculate points?
The game reminds me of a mobile game I saw before but couldn't remember the name. In that game, you are also asked to choose which to send to heaven or hell. They added some comedy elements to it like dialogues and comedy comic.