The pro-level Super Smash Bros. Tournaments each have a guaranteed minimum prize pool of $300. Prize pool will increase past $300 by $10 with every entrant after the first 30. Amateur Day-Of Tournament is a trophy class.
Brain stem death is where a person no longer has any activity in their brain stem, and has permanently lost the potential for consciousness and the capacity to breathe.
Blood isn't what keeps the brain alive per se, but rather the dissolved oxygen in the blood. Typically, the human brain can go for about 3 to 5 minutes without oxygen before irreversible brain damage begins to occur, and 9 minutes is usually the point where brain death will occur and all electrical function stops. But in certain situations, the brain can go as long as an hour without oxygen.