you should be able to split your mebas into teams inside your lab and see witch side is better at fighting, also there could posably be a mutation that allows then to eat eachother! (im saying this cause my big combat mebas always get starved by my little mebas that mass repoduce)
in every multiplayer game i have played the game has stopped doing the commands (the animations are still going) and stays like that untill someone surrenders