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OpenSauce (often just "OS") is a mod for Halo Custom Edition and its editing kit. It enhances the in-game experience with customization and engine extensions, but also offers modified versions of the HEK tools for more extensive modding of the game. It is mostly used as the base for experimental maps and singleplayer overhaul mods like CMT's SPV3.
OpenSauce is incompatible with Chimera. Attempting to use both at the same time will result in crashes or a white screen when launching the game.
Note that OpenSauce uses the filename
initc.txt for init scripts instead.
Crash reports can be found in
<DRIVE>:\Users<USER>\Documents\My Games\Halo CE\OpenSauce\Reports.
These extended tag types are specific to OpenSauce .yelo maps and are only supported by the OpenSauce mod: