How To Do A/B Testing On MOBA Games

DOTA2 is a popular Massive Online Battle Arena (MOBA) game with millions of daily active users. Players pick from 121 heroes and play in 5v5 games. The game is known to have a steep learning curve and there is no one hero that guarantees a win. Indeed, for every hero there seems to be another that is the perfect counter to it. DOTA2 is also a constantly evolving game where items and heroes get either buffed or nerfed in order to keep the game balanced.