I found that while trying to place some of my troops, once i let go of the left click that they should drop where i let go of it but they tend to place themselves like a second later when my mouse is elsewhere.
It's quite unfair in my honest opinion.
I really, really hate that when you kill a boss, all of that bosses bullets are still floating around so if you hit one and you have low HP, you lose and have to restart, you should atleast get rid of the bullets once a boss dies :/
 "Exorbis 2"){kind=icon}
 "Defend your Honor!"){kind=icon}
 "Bullet Heaven"){kind=icon}
 "Splitter Pals"){kind=icon}
 "Saving the Company"){kind=icon}
 "Dead Metal"){kind=icon}
 "Sleepy Stu's Adventure"){kind=icon}