4-Player Co-op Glitch

The 4-Player Co-op Glitch in Halo 3 and Halo: Reach allows three or four players to play locally in Campaign or Firefight.
==Instructions==
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#Have two players sign in and proceed to the Campaign or Firefight lobby.
#While in a Campaign mission or a Firefight game, press A for the amount of players that are going to join.
#Quit the current mission/game.
#Start the game again, but this time press A for the third player a second after the final beep of the countdown. For 4 players, do the same, but press A for the fourth player a split-second after the third player presses A (just before the game says "Setting Up Game").
==Trivia==
*In Halo 3, the game will freeze if the player comes across a Cortana HUD moment.
*In Halo: Reach, the game will lag or freeze briefly when there is a lot being rendered at once.
*This will also record your post-game reports if your profile is connected to Xbox Live.
==Sources==
Category:Halo: Reach Glitches
Category:Halo 3 Glitches