Gladiators
Join the arena with ETH wich is directly converted to gladiator power, the minimum is 0.01 at the fights are simple:
if you have more power/ETH than your enemy you have more probability of winning. (direct correlation between you eat/power and %)
You can attack or defend:When you attack you spend more art in that transaction and because of that the attacker have one advantage of 5 % in the fight.
If you win you kill the opponent gather all the power/earth - (devFees - kingGladiatorFee) from him and becoming more powerful for the next battle.