SUPER well polished, really well made, great mechanics, fits the theme really well and its really fun! i had some trouble finding same colored trains sometimes but thats not a big deal since you can change your train color and also find upgrades around the level
my only feedback is that the fact touching the wrong colored train completely destroys you feels a little bit unfair, especially since thats really the only way you can die it seems, since gunshots from other ships dont damage you as much
that said, REALLY great job!!!