Halo: The Master Chief Collection Patch Adds Custom Game Browser For A Stress Test The patch adds a test version of the Custom Game Browser and also fixes a series of bugs and other issues. Halo: The Master Chief Collection has released a new update that sets the stage for the introduction of one of the game's most highly anticipated features, the Custom Game Browser. This update introduces a "test-ready" version of the browser that will be available for a limited time as a stress test before it's ready for its full debut. For the purposes of the test, only Halo: Reach will be supported for the Custom Game Browser. The test is scheduled to begin at 10 AM PT / 1 PM ET on April 29.