The GameGuru Mega Pack 3 contains over 400 game ready entities! There's a wide range of objects in this pack including war-torn buildings & old ruins, industrial machinery, medical items, furniture, sports equipment and much, much more.
If you want to get your hands on the GameGuru Mega Pack 3 DLC, it's currently on promotion right now:
https://store.steampowered.com/app/321142/GameGuru_Mega_Pack_3/