Instructions
Choose a level to use with Forge and sign in or invite all of the players to the Forge lobby. Select the "Start Game" option to begin a game of Forge.
Press "Up" on the directional pad while in a game of Forge to change from your Spartan or Elite character into the Forge Editor tool. The Forge Editor has the ability to freely fly around the stage while picking up, adding or removing weapons, vehicles and objects. Only one player can be the Forge Editor at a time.
Scroll through the options as the Forge Editor, such as Vehicles and Weapons, and press the "A" button to drop the item into the level. The green cursor represents where the item will be placed.
Pause the game once you have set up the items according to your preferences and select the "Save as New Map" option to keep a record of your work as a playable map. Select the "End Game" option to return to the main menu.