This specific flash game is called Particle Destroyer, basically. AK you were on the right track, but the 'kuru' (not kure) is part of 'Party', making 'Pa-ti-ku-ru' (particle). The easiest Japanese is the japanese that's in English :P

The game is basically breakout, but what happens is wherever the 'ball' hits on the colour palatte at the top, it chips off part of that color and turns it into a ball. A neat idea.