Asset Store to sell a free study ?

Hi there
I am preparing a package to AssetStore.Free ones, I use a cubemap in Angry Bots project in this package.I use this cubemap, creating a problem ?. In the package if I want to sell?

I believe you’re asking the question: “Can I include a cubemap from the Angry Bots project in a free asset I am creating for the asset store?

In which case, the answer is “yes”. You can include any assets created by Unity (so, anything from the Angry Bots, or any other sample/tutorial created by Unity Technologies) in your own packages.

See the answer in this thread from Sara Cecilia.