We meet the unique setting, never seen before. The genre is extremely popular. Because if we take all 3d video game genres, shooters will take 20%. All the market is believed to have a money turnover of billions of dollars. Billions of income annually. If we take these 20% and subtract all others competing projects, we'll have quite a big number. Plus, we should add micro transactions which allow players to pay often but with small amounts. There should be a lot of players. And average income of 20 dollars from everybody would make the impressive number.