The game shows great promise, I loved the variety in bugs! I liked that there were active abilities, made the down time between level ups more entertaining. I did wish there was the ability either through a perk or just as a rare chance to get upgraded train cars as a choice, nothing crazy just a level or maybe even have them have effects. Again this could be an unlockable perk or something.
The UI could also use a touch up, specifically an indicator for where the front of the train is located on the car equipping screen.
Gameplay 04:43:19