I've just completed everything that comes with the game as well as the ones from indiedb ... anyone got links to more?
I found some here but the posts are very old and so some of the links don't work and some are to mdb rather than ldr files (same thing but you need to run them through stud.io and click "release" in the bottom right of the window to break parts into just bricks.
I've yet to try them with Bricksperience but the ones I tried from the Classic Space theme from the archive on LDraw (more up-to-date but also with many mdb files) didn't work great since apparently Bricksperience is missing a bunch of the really common Classic Space "bricks"... I always though they were generally really but I just had too much Space themed stuff it seems... and the later stuff is a no go because there were so many custom pieces and transparent pieces just used in space stuff... I'm guessing my beloved monorail is also not going to work! :/ [Edit: the monorails tracks are in! *yay* but the large wall/roof transparent plates are missing as are some hoses which might not be useable in Bricksperience?]
Having said that, I plan to put together a bunch of bricks ids that cover Classic Space stuff and are used in multiple sets and will submit them on the appropriate theard to see if DasMatze would be able and kind enough to add them... I looked at the files and it looks like they need to be run through the dev environment to get them into the right format for Bricksperience?