Guys I believe I posted this couple of weeks ago, but I created a game about 2 months ago and decided to turn it into an asset in the Unity Asset Store, I actually added the complete source code of the full game. Check it out and feel free to ask any questions.
The asset you are selling includes parts of my asset, RPG Creatures Pack (namely the one-eyed slime monster). I believe there are other similar assets in your pack that were done by others.
You surely can create a game using these assets, and then you can sell the GAME. But you are selling the assets. You cannot re-sell assets made by others.