First of all, the Digital Dragons is a true feast of the Polish gamedev community, attracting representatives of practically all studios in Poland. (dutchgamesassociation.nl)
Poland has itself grown into a hub for gamedev in Europe over the past decade. (gamesauce.biz)
We estimate that there are more than 4000 people developing games in these teams and if you would like to calculate people doing services for gamedev like publishing, distribution, external development, Q&A, localization, etc... the number would at least double,» listed Jakub. (gamesauce.biz)