Find a hunger games map available to download for the 360 version of minecraft, then download it.
Put a minecraft save on your usb via the 360 (can be any map save) then unplug the usb from the 360.
plug in your usb to your computer then open horizon
drag and drop the hunger games save you found on the internet into horizon
click save to usb, then save rehash & resign
unplug usb from computer, then plug back into your 360
launch minecraft and select the usb as the storage device for minecraft
When on the map selection screen hover over the hunger games map you downloaded and there should be an option to “transfer save to Xbox one” on the bottom of the screen. Click it to transfer save.
Once save is transferred get on your Xbox one and load up minecraft
When your on the map selection screen there should be an option to “retrieve transferred saves” click that and download the save you transferred from the 360.
You’re all done! Enjoy your Hunger games map on the Xbox One