A wise man once said that the best way to know a person is to have them play a competitive strategy game like DOTA. Just kidding, I'm the only one who says that.
The beauty of great MOBA (Multiplayer Online Battle Arena) or RTS (Real-time Strategy) games are in their ability to convince someone to play without getting intimidated with the "oooh, it's a strategy game. Gotta think hard". In chess, it's obvious for you to think deeply about your moves. In DOTA, it's less obvious that you need to do so. Everyone can play DOTA while knowing nothing about the strategy component. You can just run and kill everything that moves and still have a lot of fun.
This is why DOTA is such an amazing tool to get a glimpse to how someone's mind works as it helps you see how they approach their decisions. Are they the kind who would subconsciously think through their actions or are they the kind who would die from the same mistake 12 times and not realizing it?
Most of the decisions we make in life are not made in the "chess mode" where you can sit down and try to think 5 steps ahead. It's more about the hundreds of micro-decisions that we make in a day, those that we go through subconsciously. These are the decisions that really matters. While the effect of these micro-decisions are small, it will quickly snowball and compounds into something much larger than the sum of its parts.