It's super old. How did you not know about it?
I think PvP minecraft is boring IMO
PvP = player vs. player. Spleef is two players trying to kill each other by dropping the other player. Spleef = PvP.It is more like a survival kind of arena, it is fun when there is like 10~20 players or more.
I play Minecraft on the 360 with my IRL friends cause when I first played it on PC way back in beta, the crafting sucked.