You're right this type of game is what has been evoke since the early days in gambling when there have not been any digital technology with gambling during that era, not only cock but gamblers also make use of other animals like rams to gamble in those days, this were best enjoyed on an open field with a numbers of spectators to witness the fight and also cast their bet, cock fight is as interesting and same way entertaining and gamblers still practice this type of gamblings till present days all over the world but common in the remote regions under rural settings.