Monkey Go Happy Stage 164 is another incredible adventure in the Monkey Go Happy Series. This is the 164th adventure that our cute monkey will take on. You must guide him through a scary red castle crowned with a large skull. Talk to the merchant to find out what items he needs to trade.Monkey Go Happy Stage 164 is another incredible adventure in the Monkey Go Happy Series. This is the 164th adventure that our cute monkey will take on. You must guide him through a scary red castle crowned with a large skull. Talk to the merchant to find out what items he needs to trade.