On par with watching grass grow...
The game idea, art, sound was all excellent, but, speed also makes the game, the trains move very slowly, cannons shoot slowly (sometimes don't align with mouse), enemies are hardly noticable they're so pathetic, and I can't play a single level for 20 minutes knowing that theres a bunch more even longer and slower than the first... Pump things up a little! The same problem existed with sky wars, the game just went too slow. Things got boring way to fast. Keep up the good work!