Haha... Funny because that actually looks like it could have been a scene from The Hunger Games
But if the games are going to be in Japan, then "Battle Royale" would be the more correct name for it (as we know Hunger Games copied the Japanese novel/film Battle Royale).
I suspect that chess would'nt be interesting enough.. for me it's interesting, especially from tactical perspective (a bit like soccer) but for the crowd it's too much brain effort