This was a decent tower defense game. I did run into a few bugs, such as placing, blank tiles in front of roads, or accidentally placing tiles when I was trying to rotate the camera, but overall it was fun. There didn't seem to be any difficulty curve, however. As soon as I got 3 defenses down I never had a single car escape, so it could use a difficulty curve to keep it interesting. It also didn't have any sound for me? That said I know how complex a hex grid system is and there were a decent amount of mechanics going on there, so I say good job!
If you would be so kind to play my game and leave any feedback, I would really appreciate it! Its a multiplayer game, so I suggest playing with a friend/s, but its not necessary.