As of today, Blizzard has expanded the custom match functions for Overwatch players. The newly added game browser both adds a ton of new options for players to create custom Overwatch matches and enhances the ability of players to find the matches they want.
With the Overwatch game browser, players will have access to toggle switches and sliders for a ton of options, including modes, abilities, speed, health and damage. Once a game is created, the player can adjust who is allowed to join the game, even opening it up to the general public. On the other side, rather than going through matchmaking, players can now choose to browse through a list of open games built in the game browser.
The game browser is live now for all Overwatch platforms, and Blizzard plans to add to this new feature more in the future. This shooter is about to get a lot more interesting.
Source: Overwatch Blog