It's a silly little game. :) (please add ability to sell turrets and an occasional UFO that would distract air defense)
Why would you want to sell turrets?
And I actually have an UFO fly-by planned, but as a "golden cookie" active clicker event lol. Though the idea that it also distracts turrets is funny.
I bought the cannon and didn't like it.
Oh, now I see where the confusion is. Didn't mean turrets but the bloody cannon that keeps dropping balls on my dwarves' heads.