[Grim_]

Just find what the lowest Z coordinate of your map is, then if they go below that value, then eliminate them from that game, until the next one starts.

pawn Код:

new Float:Pos[3];
GetPlayerPos(playerid, Pos[0], Pos[1], Pos[2]);
if(Pos[2] < "lowest Z coordinate in map")
{
  // Eliminate from game
}