Re: Play Custom Map - Remastered
@DocileBear Are you talking about playing it in an online match, or just locally as skirmish? Or is it a singleplayer scenario?
Sadly, the non-Steam version can't upload things to the Workshop, and the map pool used for online play comes from the Steam Workshop, so you can't use them online. To play the map in Skirmish, or as custom mission, you just need to put it in your Documents folder, under "CnCRemastered\Local_Custom_Maps", inside the folder for the correct game ("Tiberian_Dawn" or "Red_Alert").
As far as I can see, the lack of Steam upload for the EA App version isn't an artificial limitation, either; Steam doesn't allow uploading things for a game you don't own on their platform, and the Steam version of the Remaster contains a specific Steam library for its DRM that the editor also uses to connect to Steam and do the workshop upload.
Note that I created a vastly upgraded version of the map editor, with added features such as drag-placing map tiles, flood fill, a more complete undo/redo system, drag & drop file loading, menu shortcuts, no freezing during save operations, and a lot more. If you're interested in making maps, you might want to check that out:
https://steamcommunity.com/workshop/discussions/18446744073709551615/3412056228828174003/?appid=1213210