I wish I could sell Old Glory back. There's no way it's better than the Gravity Cannon. I quit on day 33. One month would be a perfect game. Something to aim for, then maybe a bonus. Also I did not like how the days ended so abruptly. Let us kill the remaining enemys first. 4 out of 5, almost 5/5.
The best thing about this game is how the turrets seem to work together. There are no wasted shots. Every gun knows exactly how many shots the enemy needs.