Bullet Heaven 2 is one of those fun arcade style games that you can easily play with only your mouse. Kinda ironic, since you are going to be using your PC mouse to shoot cats:) The theme is kinda weird, but since it's a Japanese styled game it also kinda makes sense. You'll be going through different landscapes shooting cats and other creatures in an effort to defeat the Kitty Kingdom. That's Bullet heaven for you :) This is one of those browser games that you just have to play for a few hours, because even dough their are many browser games with the same gist, it's still really fun. Enjoy playing Bullet heaven 2!