The bugsword is not very powerful in my opinion. Since it's a Giga chip, it comes out 5 times less often than a standard or mega chip. Don't know why but it's true. It turns your charge shot into a purple lifesword that deals 200 each time. But here's the catch, each charge shot you do with the chip in effect will cost you one additional bgfrg. The only purpose I see in this chip is 100% the game.