Creating Custom Games in Halo 3: Complete Guide with Forge

1. Access Custom Games

Main Menu → Multiplayer → Custom Games.

2. Configure Game Settings

• Game Type: Slayer, CTF, Oddball, King, Juggernaut, Infection, VIP, Territories, Assault.
• Map: Any unlocked disc map, DLC map, or Forge variant.
• Settings (Press Y / △):
  • General: Time limit, score limit, rounds, respawn time, shield/health modifiers, motion tracker, friendly fire.
  • Weapons: Starting loadout, weapon spawns, ammo, weapon sets (Default, BR starts, Snipers, Rockets, etc.).
  • Vehicles: Enable/disable per vehicle, respawn time, health multiplier.
  • Equipment: Regen, Bubble Shield, Power Drain, Flare, Radar Jammer, Deployable Cover.
  • Player Traits: Speed, gravity, damage resistance, melee, grenade count, active camo, waypoint.
  • Spawning: Static, dynamic, team-specific, anti-camp.

3. Forge a Custom Map (Optional but Powerful)

1. Main Menu → Forge → Create New Map (or edit existing).
2. Budget: Each object costs "budget points." Max ~3000–5000 depending on map.
3. Tools:
   • Object Placement: Weapons, vehicles, crates, barriers, teleporters, spawn points, hills, ramps.
   • Terrain: Not editable in H3 Forge (unlike Reach/4/5). Only object placement.
   • Scripting (Advanced): Forge Script (added in later updates / MCC) — triggers, conditions, actions (e.g., "On Player Score → Spawn Vehicle").
   • Lighting/Fog/Skybox: Adjust per zone.
4. Save → Name → Appears in Custom Games map list.

4. Launch & Invite

• Press Start Game.
• Invite Friends (Xbox Guide → Friends → Invite to Game) or open to Public / Party.

Pro Tips

• Test in Forge Monitor Mode (fly, noclip) before saving.
• Share map files via File Share (Bungie.net legacy / MCC File Browser).
• Browse community maps: Halo Waypoint, ForgeHub, r/Forge.

Custom Games + Forge = infinite replayability. The soul of Halo 3's longevity.