The concept of the game is very unique and it's something that has definitely the potential for so much more.
The game already introduces some structures the player can construct, but there could be so much more than that.
There's potential to take this into a tower defense genre, rather than singular dragon bosses, there could be waves of enemies, that require structures like the ion cannon to destroy.
Additionally, making the information on how to construct these structures ingame would be more useful, rather than the need to refer to an external source.
Although the game currently doesn't have too much to offer, it is a promising start with a solid concept, and for that, it's a thumbs up.