I found this song very inspirational
https://cults3d.com/en/3d-model/game/martian-corpuscular-electroshocker

Aircraft Lag

This is a fairly entertaining game. However, since the airplanes don't actually disappear when they go off the screen, their continuous shooting will slowly make the level lag more and more. That is annoying.

Silver

Silver really is a pointless resource. I recognize that part of this game is about figuring out how to spend all of your resources; I teched into Paladins because they didn't cost wood. However, there is no object one can purchase that costs more silver than any other resource.
One solution would be to trade with silver instead of with gold.

30287? Also, I've played this before

This game doesn't establish itself as different enough from the other games you've made.
The only way this game could be set in the year 30287 is if you were using a calendar where the current date was 30307.