Alright, I finished the game, here's the proof:
Which is why what I'm about to say might come as a surprise, which is that I didn't like the game as a whole. In fact, what kept me going at the end there was probably sunk cost and how mad I'm for the game wasting its potential.
The game starts off really strong and promising. The idea is great, the execution is great, and I'm super into idle games that are grindy, this was the perfect storm for me.
My biggest problem with the game can probably be break down to these few words: No offensive towers.
I realize this somewhere during the mid-game, at the time it wasn't a deal breaker to me, because the spawn rate of the ghosts was still relatively low. By mid-to-late game, you pretty much have to go back to the tower every 30 seconds or so to kill all the ghosts that are bothering the crystal. And the ghosts can literally spawn right next to it. If they spawn near the edges and slowly move towards the center, it would probably been fine since you are near the edges looking for resources, but nah. Just spawn right in the middle.
Since all the diamonds and gold are at the edges of the map, the late game cycle basically becomes rush out to the edges, build as many resources tower as fast as you can, remove the old ones that ran out of resources, and rush back to the center in 30 seconds to kill all the ghosts, repeat this cycle every 30 seconds. Why... just, why? If you want the player to explore the map and plan out their towers, this is the opposite of what should have been done. I feel like a chernobyl liquidator rushing to the roof just to take like 2 pieces of graphite with me before rushing back.
Of course, the crystal towers help with this, but to build them, you need resources, which you also need to beat the game, so if you want to beat the game, you really need to weight on how much do you want to rush back to the tower with how long do you want to keep playing this tedious end game for.
Beside that, there's also some minor issues with not having camera lock, and progression being too slow at times.
This game has some really big potential, but by god it step and spit on most of it.