This is a novel concept, but one I feel has not been well executed. The very first thing I noticed was the psychodelic visuals that actually hurt my eyes to look at, making playing the game at all quite difficult to do.
Unfortunately, the gameplay is less about strategy and resource management, and more about waiting - each level I completed boiled down to 'destroy a generator, find somehwere safe from the monster trajectories, and wait the rest of the minute' - there's little planning or skill involved in destroying each one, and indeed I wasn't even aware that is what you were meant to do until I read the description, since there's no indication that your bullets have any effect on them nor any cue that that is the objective.
Lacking any music, much sound, or any kind of introduction to the game (not even a title screen) results in the game feeling a little empty and soulless, while the misaligned instructions screen lacks sufficient information or indeed time to take it in before the game automatically begins.
Again, the concept is an interesting one, but it needs a lot more done with it.
Reviews for "Three Bullets per Minute"
Really slow and gives a lot of headaches.