I see that people have published game modes such as infection but I cant figure out how to separate my mode from my map. I want to test my version of slayer with my custom scripting but I cant figure out how. How can I separate my mode and scripts from my map?
Not sure what your asking but here goes.
“I want to test my version of slayer with my custom scripting but I cant figure out how.”
After you have saved your map with your scripts the just load up a map and check it out.
“How can I separate my mode and scripts from my map?”
Just highlight your script ( lets say its a box ) Just highlight the box and hit your delete key. That is what I do. Then just go edit another game mode and give it a different name. Example: DualAbyssal New Slayer Map.
Hope that helps 
I have not tried this yet, but as far as I understand, scripts are bound to the map…but I believe you can still save your script-brain as a pre-fab by grouping it with some other object…then when you forge a new map, under “Pre-Fabs” in your forge menu, select the prefab with the script brain, and ungroup it from whatever you grouped it with to make the pre-fab, and delete any unnecessary parts… [I think]
Sorry if my original post was confusing. What I want to do is to make a mode that can be played on normal 343 and community maps. Like how when you make a custom game you select a map then you select a mode such as slayer. I want to make a mode but not a map so I want to make my custom mode playable on all maps. Does that clear things up?
I made a CTF custom mode ( around 40 changes in the lists ) that can be played with “ANY MAP”. What I did was change the settings in the ARENA CTF mode. I change te game mode to Custom CTF game. I can play that Custom CTF Gme Mode with “ANY CTF MAP!”
Hope that helps