Love it. Other than some minor balancing it looks perfect. Great concept, and I love the simplicity of it. I found that when you wait a day and get 38.7K skeletons you can do some damage, and the Necromancer and Learning upgrades seem a little short to base upgrades like Wrath and Calm, and the mob improvement upgrades look to be about in the middle. In terms of balancing It actually looks pretty darn great, and especially for a jam. I love how it doesn't throw things in your face, or be too boring, and I'll say that I love the duality between necromancy and fighting. When it comes to the higher units they aren't very worth it to generate, so adding a bit more health to the vampire, or having reapers generate more skeletons, or giving dragons more health would be great for balancing main game. Trophy section looks great, and I can't wait to see what you add. The only thing that I would change is adding some music or ambience sounds. Take your time though, I understand that making games takes motivation and effort, and is a difficult thing to do. Take my opinion with a grain of salt too, because I haven't explored too much and looked for too long (I've been playing for 2 days), and stay true to what you want to do. Last thing is considering the reset, I loved it. I think most games with that kind of system take too much from you to give you a couple, or even just one thing in return. I didn't see that (or the opposite) in this game at all, and I love how this went with it. Great game, and a good execution of an amazing concept.
Edit: Prosperity is a very strong late game.
Edit, the sequel: So I've been playing more and found that I need to grind a lot to make the reapers and vampires useful, and that they seem underpowered compared to skeleton and zombie based builds where you have a lot of numbers.
Edit, the trilogy: So I just got all the medals and without spoiling anything i just wanna say I love the effort you put into that, and it feels very rewarding to get that and the bonus that you get is very nice. Also I take back what I said, Necromancy and Learning are what I've done for every build and are very useful. Also Bone Dragon and Zombie ugrades, as Bone Dragons ability is so strong, and when Zombie is high enough, you can basically kill anything. Doing a Reaper-Skeleton dual build can also be madness if you get high enough. If you want unit ideas, I thought "Right Click to Necromance" had a very simple but effective unit style, so you could draw some inspiration. *spoiler* I also like the symbols better than the emoji's, but that's my personal opinion. So thank Lorc, Delapouite & sbed for me. and Thank You for making this little gem.