Indie game storeFree gamesFun gamesHorror games
Game developmentAssetsComics

I think Debian just does things differently as far as where it puts libraries. If these things are installed, they should be in the PATH for your application to find, and I'm not sure why they aren't.  I'v had similar problems with other 3rd party software. I'll keep looking into it, and if I find anything out I'll certainly let you know.