Comment by diath

The BEAM is made with fault tolerance, scalability, and concurrency in mind at the cost of performance due to immutability and message passing approach among other things, which sounds like a terrible choice for a multiplayer video game that's anything more than a walking simulator. Erlang sounds like a good choice for auxiliary video game services, such as chat/social, guild management, auction house and so on, not so much for the game shard itself.