If the assets are in FBX format then they should be compatible. As for using them in a game, I think you can even if it’s not in Unity, but you would have to check the licensing terms for the Unity asset store.
If the assets are in FBX format then they should be compatible. As for using them in a game, I think you can even if it’s not in Unity, but you would have to check the licensing terms for the Unity asset store.