So i have played for some time on new 2.0 existing map like 30h and wanted to add this mod (used often before 2.0). The problem is with alien remains not spawning. I used the command to reveal map like 1500 and still don't see any, is there a way to add this to existing map the basic one ?

Hey, if you've used commands anyways, I think the easiest way is to use a command to spawn in few alien remains. :)

You can find the command here: https://wiki.factorio.com/Console#Add_new_oil_patch
Just replace "crude-oil" with "remains"

After a while i used editor command and spawned few ones, thank you for reply. I think this will be helpful for those with existing map.