Introduction to Megalo

Located after the [Base Variant](Introduction to Game Variants) in PvP and Forge game variants, Megalo provides game developers access to nearly every aspect of the gameplay in a gametype.

Megalo is a powerful engine which enables rapid prototyping and iteration of gametypes. Since Halo: Reach, every single gametype ranging from Slayer to Invasion to Extraction was made using Megalo. It also allows Bungie and 343 Industries to patch bugs and introduce new features (and gametypes) through its Matchmaking and file sharing systems instead of sending out a costly Title Update.

In Halo 4, the Megalo data consists of the following:

Name	Description
User-Defined Traits	Contains up to 16 trait sets which can be referenced by MegaloScript
User-Defined Options	Contains up to 16 settings to display in the gametype options menu
User-Defined Strings	A localized string table containing the strings used by the gametype
Base Gametype Metadata	Localized metadata for the base gametype
Map Permissions	Controls which map has access to this gametype
Player Rating Parameters	Defines arguments for the player rating system
Global Game Options	Stores the global game options (e.g. score limit)
Map Loadouts	Contains map-specific loadouts
Menu Flags	Toggles the visibility of menu options and whether they are enabled
Conditions	Contains MegaloScript conditions
Actions	Contains MegaloScript actions
Triggers	Contains MegaloScript triggers
User-Defined Statistics	Defines gametype-specific stats
Variables	Contains MegaloScript variables
HUD Widgets	Defines widgets to appear on a player's HUD
Events	Associates a game event with a trigger
Required Object Types	Specifies the object types a map must support to play this gametype
Object Filters	Defines a filter which can be used to quickly iterate through certain objects
Candy Spawner Filters	Defines filters for candy spawners
Weapon Tuning	Contains tuning options for most weapons (since TU5)