This is the fixed version of yukkuri bubble wrap popping game. post #2306 has the very same flash file, embed in archive with some addons, like html wrapper.
In the massive 8x4 roster, I decided to... well... do it slowly, so I ultimately ended up with one happy yukkuri amidst a storm of its slaughtered allies. I guess they're fine as long as you kill them in a leisurely manner.
Try playing roulette mode: keep Tab key pressed, to move the selection rectangle over all the Koyukkuris, and press Space Key to activate mouse release event, which kills a Koyukkuri.
Warning: Press Space key after the selection rectangle has passed over the mode selection buttons to avoid changing mode.