Typically shoot em' up games where the emphasis is dodging a large number of bullets on the screen at once. Bullets form dense patterns on the screen that require precise controls to avoid.
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Games that can be played using only a mouse or other pointing device, and don't require any other input.
Explore games with one button tagged Bullet Hell and Mouse only on itch.io · Upload your games with one button to itch.io to have them show up here.
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