A scenario is a map. A campaign is 1 or more single player scenarios that play in succession with instructions and a prologue.
If you make a custom single player scenario, and use additional media such as custom sounds/music and say a video. You have to have the people downloading the map, manually put each and every single item of media in the proper folders. And when the player wants to delete the map from his folder. He would have to search and delete everything associated from the map. This is difficult if not knowing what they are.
A campaign bundles all the media within the campaign. Sounds/music, Bink videos, and even the background bitmap that is used on the instructions page. Without having to insert the media files or even remove them if you want to scrap the campaign.
So even if the campaign is just 1 map, it has it's advantages over submitting just a scenario.
Another advantage of a campaign is that if a scenario is being played, it can be saved as a single player scenario saved game, and resumed as the campaign. Being that winning it will take you to the next cinematic, splash screen, video, or scenario in the campaign.
So here's scenario verses campaign list.
-Multiplayer map- Scenario. No exceptions.
-Single player map(no media, no prologue, no 3 level difficulty choices)- Scenario.
-Single player map(custom sounds/music, videos, prologue, instructions/hints/objectives, or a background bitmap)- Campaign.
-Single player, more than 1 map- Campaign.
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...All American Bunny.....[This message has been edited by _o0XxX0o_ (edited 08-12-2007 @ 11:11 AM).]