Nifty lil' game. Reminds me of a certain minigame from Super Mario 64 DS where you're sorting out mines. It's a novel concept to game-ify some traditional click and dragging files into folders. But now you're putting bombs away and if you don't do it in time they explode!
Some small criticisms I have are that the game could do with a color blind option. I had to turn off my blue light filter to play the game, otherwise I couldn't discern the difference between the black and blue bombs. Some symbols on the bombs would definitely help. Maybe triangles, squares, and circles.
One feature I'd like to request is to have a dedicated button (maybe right click) where if you hold it, it accelerates the bomb spawns. It would not only speed up the process of starting up a new run by cutting down the wait, but it would also introduce a risk vs reward mechanic.
The aesthetic is decent enough, but I really dig the way the game sounds when clicking and dragging. The game is generally well polished and decent quality. Great game!