У вашего броузера проблема в совместимости с HTML5
Dota 2 Battle - it is battle of two heroes 1 vs 1
Rules of battle.
Heroes cant buy divine rapiers.
1.Round.600 gold. lvl -1
2.Round.5000 gold.lvl-6
3.Round.10000 gold.lvl-12
4.Round.15000 gold.lvl-18
5.Round Unlimited gold and 25 lvl.
If a hero lost a round he can change the build.
Winner is selected by striking of 3 rounds