The Golden Survival Arena is an event that occurs every 5 hours, where players are teleported into an arena and must survive to wave with various Pokémon and the strength of the Pokémon increase in every wave.
To participate in this evento you must use Meowth Coin item. This item can be obtained by buying from NPC Meowth Dealer or by dropping from Hunter Meowth.
In the event area, there are tables showing the rank of the event and the players registered in the round.
You can see the time left with the command: !golden