I think it's visually ok but kind of hard to follow other than in the abstract. Mousing over players names is basically a crapshoot. But, it gives the overall

I think it's visually ok but kind of hard to follow other than in the abstract. Mousing over players names is basically a crapshoot. But, it gives the overall sense of the data. It's a bit more style over substance. As to how it's made, looks like a simple canvas animation.