csgo:newest。

The URL "csgo://newest/" is likely a URL for a CS:GO (Counter-Strike: Global Offensive) match. The "newest" part of the URL is likely to refer to the most recent match that has been added to the server.

In CS:GO, players can join servers and play against other players in a variety of modes. The server is responsible for matchmaking, which means that the game will be automatically matched with a player or team of players based on the skill level and other criteria that have been specified.