Quote Originally Posted by nichendrix View Post
What I really wanted to know is if the content for MapForge (the sci-fi packs on the first link) can also be used in FM8 or CC3+ in any form, because in their entries it stated on their description that they only work for MapForge.
The Add-On format is exclusive to MapForge, but much of the content is available elsewhere, if you really need to use it in other apps. For example, you could buy the sci-fi tiles direct from Pwork Wargames, and they'll be delivered as PDFs. Use a utility to strip the images from the PDF, resize them to the resolution you need, and organize the resulting files into easy-to-navigate folders to keep everything organized.

Another example: The content from Maker Games can be purchased on the Roll20 Marketplace as downloadable PNGs.